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| import pyaudio | |
| import numpy as np | |
| import time | |
| CHUNK = 2048 | |
| RATE = 44100 | |
| pa = pyaudio.PyAudio() | |
| stream = pa.open( | |
| format=pyaudio.paInt16, | |
| channels=2, | |
| rate=RATE, | |
| input=True, | |
| frames_per_buffer=CHUNK, | |
| input_device_index=0 # microphone input, remove this line to use default | |
| ) | |
| # ADJUST THESE THRESHOLDS IF NECESSARY | |
| volumeMap = {00:"▁",25:"▂",50:"▃",100:"▅",500:"▆",900:"▇"} | |
| MINUTE_BUFFER_SIZE = 120 | |
| QUICK_BUFFER_SIZE = 10 | |
| VOL_THRESHOLD = 200 | |
| quick_buffer = ["▁"] * QUICK_BUFFER_SIZE | |
| minute_buffer = ["▁"] * MINUTE_BUFFER_SIZE | |
| current_time = int(time.time()) | |
| stream.start_stream() | |
| def getCurrentVolume(): | |
| data = np.abs(np.frombuffer(stream.read(CHUNK), dtype=np.int16)) | |
| return np.average(data) | |
| def getHighestVolumeFromQuickBuffer(): | |
| if "▇" in quick_buffer: | |
| return "▇" | |
| elif "▆" in quick_buffer: | |
| return "▆" | |
| elif "▅" in quick_buffer: | |
| return "▅" | |
| elif "▃" in quick_buffer: | |
| return "▃" | |
| elif "▂" in quick_buffer: | |
| return "▂" | |
| return "▁" | |
| while(True): | |
| # get current volume and based on threshold add it to quick buffer | |
| currentVolume = getCurrentVolume() | |
| emoji = "▁" | |
| for volThreshold in volumeMap: | |
| if (currentVolume > volThreshold): | |
| emoji = volumeMap[volThreshold] | |
| quick_buffer.append(emoji) | |
| quick_buffer.pop(0) | |
| # if time has incremented one second, add emoji minute buffer | |
| if (int(time.time()) != current_time): | |
| minute_buffer.append(getHighestVolumeFromQuickBuffer()) | |
| current_time = int(time.time()) | |
| if len(minute_buffer) > MINUTE_BUFFER_SIZE: | |
| minute_buffer.pop(0) | |
| # print minute buffer | |
| print("|", end="") | |
| for item in minute_buffer: | |
| print(item, end="") | |
| print("|", end="") | |
| # print quick buffer | |
| for item in quick_buffer: | |
| print(item, end="") | |
| print("|", end="") | |
| # print volume readout | |
| print(str(int(currentVolume)).zfill(4), end="") | |
| print(" ", end="") | |
| # write to same line | |
| print("", end="\r") |
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Works with Python3
Requires numpy and pyaudio (install with pip)
Video explanation: https://www.youtube.com/watch?v=OwwfMq5e1tY