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annotate compal/audio/omr-from-ds @ 381:ca75ac283888

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compal/audio: analysis of handheld mode omr readouts made by Das Signal
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 09 Nov 2021 18:49:09 +0000
parents
children
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381
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 On 2021-11-09 long-time FreeCalypso community member Das Signal contributed a
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 set of omr readouts from a C139 phone operating in handheld (as opposed to
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 headset) audio mode, made by way of wires soldered to UART connection pads
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 inside the battery compartment. Raw data here:
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 https://www.freecalypso.org/pipermail/community/2021-November/000829.html
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 The post from DS includes only fc-tmsh output but not command input;
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 for better readability and understanding, here are the same readouts
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 interleaved with the commands that produced them:
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 - before the call
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 >omr ffd001ec 2
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 omr 00: 90 02
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 >omr ffd001d6 2
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 omr 00: 16 00
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 >omr ffd001dc 4
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 omr 00: 8E 01 8C 19
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 >omr ffd00238 2
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 omr 00: C7 03
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 >omr ffd0084a 10
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 omr 00: 01 00 14 00 CC 4C AD 59 00 75 00 00 00 10 00 10
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 >omr ffd00908 3e
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 omr 00: 00 40 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 omr 10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 omr 20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 omr 30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 >omr ffd00946 3e
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 omr 00: E7 FF 22 00 35 00 F1 FF 09 00 FF FF 80 FF 23 00
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 omr 10: BD FF 40 00 2A 01 BD FF C1 03 09 01 1D E1 8F 3F
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 omr 20: 1D E1 09 01 C1 03 BD FF 2A 01 40 00 BD FF 23 00
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 omr 30: 80 FF FF FF 09 00 F1 FF 35 00 22 00 E7 FF
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 - during the call
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 >omr ffd001ec 2
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 TM3 memread error: 41 0F 4E
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 >omr ffd001d6 2
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 omr 00: 16 00
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41 >omr ffd001dc 4
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 omr 00: 0E 6A 4C 0A
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 >omr ffd00238 2
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 omr 00: 46 02
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45 >omr ffd0084a 10
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 omr 00: 01 00 14 00 CC 4C AD 59 00 75 00 00 00 10 00 10
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 >omr ffd00908 3e
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 omr 00: 00 40 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 omr 10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 omr 20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
51 omr 30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
52 >omr ffd00946 3e
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 omr 00: E7 FF 22 00 35 00 F1 FF 09 00 FF FF 80 FF 23 00
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54 omr 10: BD FF 40 00 2A 01 BD FF C1 03 09 01 1D E1 8F 3F
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55 omr 20: 1D E1 09 01 C1 03 BD FF 2A 01 40 00 BD FF 23 00
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56 omr 30: 80 FF FF FF 09 00 F1 FF 35 00 22 00 E7 FF
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
58 - after the call
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60 >omr ffd001ec 2
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
61 omr 00: 90 02
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
62 >omr ffd001d6 2
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
63 omr 00: 16 00
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
64 >omr ffd001dc 4
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
65 omr 00: CE 62 4C 1A
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
66 >omr ffd00238 2
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
67 omr 00: C7 03
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
68 >omr ffd0084a 10
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
69 omr 00: 01 00 14 00 CC 4C AD 59 00 75 00 00 00 10 00 10
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
70 >omr ffd00908 3e
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
71 omr 00: 00 40 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
72 omr 10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
73 omr 20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
74 omr 30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
75 >omr ffd00946 3e
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
76 omr 00: E7 FF 22 00 35 00 F1 FF 09 00 FF FF 80 FF 23 00
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
77 omr 10: BD FF 40 00 2A 01 BD FF C1 03 09 01 1D E1 8F 3F
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
78 omr 20: 1D E1 09 01 C1 03 BD FF 2A 01 40 00 BD FF 23 00
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
79 omr 30: 80 FF FF FF 09 00 F1 FF 35 00 22 00 E7 FF
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
80
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
81 Analysis:
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
82
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
83 Read of d_vbctrl1 during the call failed for some reason (the returned error
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
84 code is E_CHECKSUM - perhaps the TM3 omr command packet got corrupted?),
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
85 whereas before and after the call we got 0x0290. Shifting right by 6 bits, we
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
86 get 0x00A as the actual VBCTRL1 register value. This reading is indeed
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
87 consistent with handheld audio mode, as opposed to headset.
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
88
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
89 d_vbctrl2: we got 0x0016 on all 3 reads. Shifting right by 6 bits, we get 0x000
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
90 as the actual VBCTRL2 register value. This reading is once again consistent
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
91 with handheld audio mode.
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
92
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
93 d_vbuctrl: we got 0x018E before the call, 0x6A0E during the call and 0x62CE
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
94 after the call. The corresponding VBUCTRL register values are 0x006, 0x1A8 and
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
95 0x18B, respectively. Tabulating:
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
96
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
97 Time point d_vbuctrl VBUCTRL Sidetone UL PGA
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
98 ----------------------------------------------------------------------
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
99 before the call 0x018E 0x006 -5 dB 0 dB
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
100 during the call 0x6A0E 0x1A8 -23 dB 2 dB
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
101 after the call 0x62CE 0x18B -20 dB 5 dB
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
102
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
103 d_vbdctrl: we got 0x198C before the call, 0x0A4C during the call and 0x1A4C
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
104 after the call. The corresponding VBDCTRL register values are 0x066, 0x029 and
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
105 0x069, respectively. Tabulating:
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
106
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
107 Time point d_vbdctrl VBDCTRL Volume ctrl DL PGA
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
108 ----------------------------------------------------------------------
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
109 before the call 0x198C 0x066 -6 dB 0 dB
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
110 during the call 0x0A4C 0x029 0 dB 3 dB
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
111 after the call 0x1A4C 0x069 -6 dB 3 dB
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
112
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
113 d_aec_ctrl: got 0x0246 during the call or 0x03C7 outside of a call.
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
114
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
115 AEC parameter words: same as in the headset mode, no change with call state.
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
116
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
117 AEC configuration appears to be almost exactly the same between handheld and
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
118 headset modes, the only difference being in the NS level bits (d_aec_ctrl[6:5]):
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
119 0x40 in handheld mode, 0x20 in headset mode.
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
120
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
121 UL FIR coefficients: identity transform.
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
122
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
123 DL FIR coefficients: got an actual filter this time, no change with call state:
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
124
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
125 omr 00: E7 FF 22 00 35 00 F1 FF 09 00 FF FF 80 FF 23 00
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
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126 omr 10: BD FF 40 00 2A 01 BD FF C1 03 09 01 1D E1 8F 3F
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
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127 omr 20: 1D E1 09 01 C1 03 BD FF 2A 01 40 00 BD FF 23 00
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
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128 omr 30: 80 FF FF FF 09 00 F1 FF 35 00 22 00 E7 FF
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
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129
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
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130 Translating into 16-bit words:
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
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131
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
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132 0xFFE7 0x0022 0x0035 0xFFF1 0x0009 0xFFFF 0xFF80 0x0023
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
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133 0xFFBD 0x0040 0x012A 0xFFBD 0x03C1 0x0109 0xE11D 0x3F8F
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
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134 0xE11D 0x0109 0x03C1 0xFFBD 0x012A 0x0040 0xFFBD 0x0023
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
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135 0xFF80 0xFFFF 0x0009 0xFFF1 0x0035 0x0022 0xFFE7
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
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136
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
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137 The same extracted coefficients have been written into handheld-dl-fir in the
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
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138 format accepted by fir2freq analysis tool. For the nsteps argument to fir2freq,
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
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139 I usually specify 40, so that the frequency response is computed in 100 Hz
ca75ac283888 compal/audio: analysis of handheld mode omr readouts
Mychaela Falconia <falcon@freecalypso.org>
parents:
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140 steps.