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jerryyip 2018-05-30 10:36:10 +08:00
parent 33ddbd39d3
commit 3074de1f86
5 changed files with 16 additions and 8 deletions
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14
pulseaudio/README.md
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@ -8,7 +8,6 @@ Following this guide if you want to use your seeed-voicecard as a default source
1. Download pulseaudio
```
sudo apt install pulseaudio
pulseaudio --k
```
2. First, you need to write [a profile for pulse](https://www.freedesktop.org/wiki/Software/PulseAudio/Backends/ALSA/Profiles/)
@ -97,7 +96,7 @@ User Name: pi
Host Name: raspberrypi
Server Name: pulseaudio
Server Version: 10.0
Default Sample Specification: s16le 4ch 16000Hz
Default Sample Specification: s16le 4ch 96000Hz
Default Channel Map: front-left,front-center,front-right,rear-center
Default Sink: alsa_output.platform-soc_audio.analog-stereo
Default Source: alsa_input.platform-soc_sound.seeed-source
@ -110,7 +109,6 @@ Cookie: 3b12:70b3
1. Download pulseaudio
```
sudo apt install pulseaudio
pulseaudio --k
```
2. First, you need to write [a profile for pulse](https://www.freedesktop.org/wiki/Software/PulseAudio/Backends/ALSA/Profiles/)
@ -202,7 +200,7 @@ User Name: pi
Host Name: raspberrypi
Server Name: pulseaudio
Server Version: 10.0
Default Sample Specification: s32le 8ch 48000Hz
Default Sample Specification: s32le 8ch 96000Hz
Default Channel Map: front-left,front-left-of-center,front-center,front-right,front-right-of-center,rear-center,aux0,aux1
Default Sink: alsa_output.platform-soc_sound.seeed-2ch
Default Source: alsa_input.platform-soc_sound.seeed-8ch
@ -221,3 +219,11 @@ Cookie: 3523:e5af
Check `default.pa` and `daemon.conf`
3. How to get PulseAudio started automatically
Normally the PulseAudio server is started automatically. If you want to disable it, you can set `autospawn = no` in `~/.config/pulse/client.conf` or `/etc/pulse/client.conf`.
[Click this for more details](https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/Running/).
4. Why the default sample rate is 96000? What if my audio's sample rate is not the same as the default?
For the other sample rate audio, PulseAudio will resample it into 96K, which means that if your audio's sample rate is lower than 96K, it will get smoothing.

2
pulseaudio/pulse_config_4mic/daemon.conf
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@ -74,7 +74,7 @@
; rlimit-rttime = 200000
default-sample-format = s16le
default-sample-rate = 16000
default-sample-rate = 96000
; alternate-sample-rate = 48000
default-sample-channels = 4
; default-channel-map = front-left,front-right

2
pulseaudio/pulse_config_4mic/default.pa
View file

@ -140,3 +140,5 @@ load-module module-filter-apply
#set-default-sink output
#set-default-source input
set-default-source alsa_input.platform-soc_sound.seeed-source
set-default-sink alsa_output.platform-soc_sound.seeed-sink

2
pulseaudio/pulse_config_4mic/seeed-voicecard.conf
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@ -12,7 +12,7 @@ priority = 3
direction = input
[Mapping seeed-sink]
device-strings = playback
channel-map = front-left,front-right,rear-left,rear-right
channel-map = front-left,front-right
exact-channels = false
fallback = yes
paths-output = seeed-sink

2
pulseaudio/pulse_config_6mic/daemon.conf
View file

@ -74,7 +74,7 @@
; rlimit-rttime = 200000
default-sample-format = s32le
default-sample-rate = 48000
default-sample-rate = 96000
; alternate-sample-rate = 48000
default-sample-channels = 8
; default-channel-map = front-left,front-right