Neo Freerunner audio subsystem
From Openmoko
(Difference between revisions)
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The Neo Freerunner inherited the audio subsystem from its older brother the Neo 1973. However, there are a few small differences. | The Neo Freerunner inherited the audio subsystem from its older brother the Neo 1973. However, there are a few small differences. | ||
This page tries to show and explain the differences and points you to the [[Neo_1973_audio_subsystem | Neo 1973]] page whenever it touches the common points (but there may be overlaps for the sake of usability). It is maintained by the Community and therefore it may contain errors and omissions. | This page tries to show and explain the differences and points you to the [[Neo_1973_audio_subsystem | Neo 1973]] page whenever it touches the common points (but there may be overlaps for the sake of usability). It is maintained by the Community and therefore it may contain errors and omissions. | ||
| + | |||
| + | ---- | ||
| + | |||
| + | '''Differences from Neo 1973''' | ||
| + | * There is only 1 (mono) built-in loud speaker instead of 2 (stereo). | ||
| + | * Don't know for sure, but the Bluetooth chip seems to be wired differently to the Wolfson Codec. | ||
---- | ---- | ||
| Line 6: | Line 12: | ||
'''Alsamixer channel controls''' | '''Alsamixer channel controls''' | ||
| − | # State: ''GSM <-> Built-in Handset'' | + | # State: '''''GSM <-> Built-in Handset''''' |
| + | ## Possibly working state files: to be defined | ||
## Mic volume: | ## Mic volume: | ||
##* Control 48: "Mic2 Capture Volume" | ##* Control 48: "Mic2 Capture Volume" | ||
| Line 14: | Line 21: | ||
##* Control 6: "Bypass Playback Volume" | ##* Control 6: "Bypass Playback Volume" | ||
##* Control 4: "Speaker Playback Volume" | ##* Control 4: "Speaker Playback Volume" | ||
| − | # State: ''GSM <-> Wired Headset'' | + | # State: '''''GSM <-> Built-in Handsfree''''' |
| + | ## Possibly working state files: to be defined | ||
| + | ## Mic volume: | ||
| + | ##* to be defined | ||
| + | ## Speaker volume: | ||
| + | ##* to be defined | ||
| + | # State: '''''GSM <-> Wired Headset''''' | ||
| + | ## Possibly working state files: to be defined | ||
## Mic volume: | ## Mic volume: | ||
##* Control 49: "Mic1 Capture Volume" | ##* Control 49: "Mic1 Capture Volume" | ||
| Line 22: | Line 36: | ||
##* Control 6: "Bypass Playback Volume" | ##* Control 6: "Bypass Playback Volume" | ||
##* Control 3: "Headphone Playback Volume" | ##* Control 3: "Headphone Playback Volume" | ||
| − | # State: ''GSM <-> Bluetooth Headset'' | + | # State: '''''GSM <-> Bluetooth Headset''''' |
## Possibly working state files: [http://handheldshell.com/gsm_headset.txt] | ## Possibly working state files: [http://handheldshell.com/gsm_headset.txt] | ||
## Mic volume: | ## Mic volume: | ||
| Line 33: | Line 47: | ||
Angus Ainslie has written a simple [http://n2.nabble.com/Sound-quality-in-calls.-tp1087522p1096155.html python volume control] using some of these settings. | Angus Ainslie has written a simple [http://n2.nabble.com/Sound-quality-in-calls.-tp1087522p1096155.html python volume control] using some of these settings. | ||
| + | |||
| + | ---- | ||
[[Category:Neo FreeRunner Hardware]] | [[Category:Neo FreeRunner Hardware]] | ||
[[Category:Audio]] | [[Category:Audio]] | ||
Revision as of 04:42, 18 September 2008
The Neo Freerunner inherited the audio subsystem from its older brother the Neo 1973. However, there are a few small differences. This page tries to show and explain the differences and points you to the Neo 1973 page whenever it touches the common points (but there may be overlaps for the sake of usability). It is maintained by the Community and therefore it may contain errors and omissions.
Differences from Neo 1973
- There is only 1 (mono) built-in loud speaker instead of 2 (stereo).
- Don't know for sure, but the Bluetooth chip seems to be wired differently to the Wolfson Codec.
Alsamixer channel controls
- State: GSM <-> Built-in Handset
- Possibly working state files: to be defined
- Mic volume:
- Control 48: "Mic2 Capture Volume"
- Control 12: "Mono Sidetone Playback Volume"
- Control 5: "Mono Playback Volume"
- Speaker volume:
- Control 6: "Bypass Playback Volume"
- Control 4: "Speaker Playback Volume"
- State: GSM <-> Built-in Handsfree
- Possibly working state files: to be defined
- Mic volume:
- to be defined
- Speaker volume:
- to be defined
- State: GSM <-> Wired Headset
- Possibly working state files: to be defined
- Mic volume:
- Control 49: "Mic1 Capture Volume"
- Control 12: "Mono Sidetone Playback Volume"
- Control 5: "Mono Playback Volume"
- Speaker volume:
- Control 6: "Bypass Playback Volume"
- Control 3: "Headphone Playback Volume"
- State: GSM <-> Bluetooth Headset
- Possibly working state files: [1]
- Mic volume:
- Control 13: "Mono Voice Playback Volume"
- Control 5: "Mono Playback Volume"
Specific Software
Angus Ainslie has written a simple python volume control using some of these settings.
