Hard coded sample rate for pyaudio

[evelyn-king]

The default sample rate of 16000 for PYAUDIO_RATE is currently hard coded. With my hardware (logitech brio webcam) and my OS (arch-linux), this is unfortunately too low (lowest for any of my audio devices is 32000). Keeping the sample rate low is a net good idea for reducing data load, but this would ideally be a configurable setting.

Traceback error for posterity:

~ ❯ agent-cli transcribe --llm

ALSA lib pcm_dmix.c:1000:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm.c:2722:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2722:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2722:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib confmisc.c:1377:(snd_func_refer) Unable to find definition 'cards.0.pcm.hdmi.0:CARD=0,AES0=4,AES1=130,AES2=0,AES3=2'
ALSA lib conf.c:5205:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5728:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2722:(snd_pcm_open_noupdate) Unknown PCM hdmi
ALSA lib confmisc.c:1377:(snd_func_refer) Unable to find definition 'cards.0.pcm.hdmi.0:CARD=0,AES0=4,AES1=130,AES2=0,AES3=2'
ALSA lib conf.c:5205:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5728:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2722:(snd_pcm_open_noupdate) Unknown PCM hdmi
ALSA lib confmisc.c:1377:(snd_func_refer) Unable to find definition 'cards.0.pcm.modem.0:CARD=0'
ALSA lib conf.c:5205:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5728:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2722:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline:CARD=0,DEV=0
ALSA lib confmisc.c:1377:(snd_func_refer) Unable to find definition 'cards.0.pcm.modem.0:CARD=0'
ALSA lib conf.c:5205:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5728:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2722:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline:CARD=0,DEV=0
ALSA lib confmisc.c:1377:(snd_func_refer) Unable to find definition 'cards.0.pcm.modem.0:CARD=0'
ALSA lib conf.c:5205:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5728:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2722:(snd_pcm_open_noupdate) Unknown PCM phoneline
ALSA lib confmisc.c:1377:(snd_func_refer) Unable to find definition 'cards.0.pcm.modem.0:CARD=0'
ALSA lib conf.c:5205:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5728:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2722:(snd_pcm_open_noupdate) Unknown PCM phoneline
ALSA lib pcm_oss.c:404:(_snd_pcm_oss_open) Cannot open device /dev/dsp
ALSA lib pcm_oss.c:404:(_snd_pcm_oss_open) Cannot open device /dev/dsp
ALSA lib pcm_a52.c:1036:(_snd_pcm_a52_open) a52 is only for playback
ALSA lib confmisc.c:160:(snd_config_get_card) Invalid field card
ALSA lib pcm_usb_stream.c:481:(_snd_pcm_usb_stream_open) Invalid card 'card'
ALSA lib confmisc.c:160:(snd_config_get_card) Invalid field card
ALSA lib pcm_usb_stream.c:481:(_snd_pcm_usb_stream_open) Invalid card 'card'
ALSA lib pcm_dmix.c:1000:(snd_pcm_dmix_open) unable to open slave
Using BRIO Ultra HD Webcam Analog Stereo device with index 24
⠋ Initializing2025-10-25 13:10:20,200 - root - ERROR - An error occurred during asr connection
Traceback (most recent call last):
  File "/home/evelyn/.local/share/uv/tools/agent-cli/lib/python3.13/site-packages/agent_cli/services/_wyoming_utils.py", line 49, in wyoming_client_context
    yield client
  File "/home/evelyn/.local/share/uv/tools/agent-cli/lib/python3.13/site-packages/agent_cli/services/asr.py", line 346, in _transcribe_live_audio_wyoming
    with open_pyaudio_stream(p, **stream_kwargs) as stream:
         ~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.13/contextlib.py", line 141, in __enter__
    return next(self.gen)
  File "/home/evelyn/.local/share/uv/tools/agent-cli/lib/python3.13/site-packages/agent_cli/core/audio.py", line 150, in open_pyaudio_stream
    stream = p.open(*args, **kwargs)
  File "/home/evelyn/.local/share/uv/tools/agent-cli/lib/python3.13/site-packages/pyaudio/__init__.py", line 639, in open
    stream = PyAudio.Stream(self, *args, **kwargs)
  File "/home/evelyn/.local/share/uv/tools/agent-cli/lib/python3.13/site-packages/pyaudio/__init__.py", line 441, in __init__
    self._stream = pa.open(**arguments)
                   ~~~~~~~^^^^^^^^^^^^^
OSError: [Errno -9997] Invalid sample rate