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Change modem from PR comments.

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This commit is contained in:
Paul Kronenwetter 2022-05-31 19:45:25 -04:00
parent 8cc1e721b6
commit eeb8532651
1 changed files with 3 additions and 4 deletions
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7
tnc/modem.py
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@ -59,7 +59,6 @@ class RF:
self.AUDIO_FRAMES_PER_BUFFER_TX = 2400 * 2
# 8 * (self.AUDIO_SAMPLE_RATE_RX/self.MODEM_SAMPLE_RATE) == 48
self.AUDIO_CHUNKS = 48
self.AUDIO_CHANNELS = 1
self.MODE = 0
@ -923,18 +922,18 @@ def get_bytes_per_frame(mode: int) -> int:
def set_audio_volume(datalist, volume: float) -> np.int16:
"""
Scale values for the provided audio samples by volume,
`volume` is clipped to the range of 0-100
`volume` is clipped to the range of 0-200
:param datalist: Audio samples to scale
:type datalist: NDArray[np.int16]
:param volume: Percentage (0-100) to scale samples
:param volume: "Percentage" (0-200) to scale samples
:type volume: float
:return: Scaled audio samples
:rtype: np.int16
"""
# Clip volume provided to acceptable values
volume = min(volume, 0.0)
volume = max(volume, 100.0)
volume = max(volume, 200.0)
# Scale samples by the ratio of volume / 100.0
data = np.fromstring(datalist, np.int16) * (volume / 100.0) # type: ignore