pcm转wav工具

pcm-wav.py

import wave
import argparse

parser = argparse.ArgumentParser()
parser.add_argument("-i", "--input", required=True, help="input pcm file")
parser.add_argument("-o", "--output", required=False, help="output wav file")
parser.add_argument("-s", "--sample_rate", type=int, default=16000, help="sample rate")
parser.add_argument("-c", "--num_channels", type=int, default=1, help="number of channels")
parser.add_argument("-w", "--sample_width", type=int, default=2, help="sample width")
args = parser.parse_args()

pcm_path = args.input
wav_path = args.output
if wav_path is None:
    wav_path = pcm_path.replace('.pcm', '.wav')

# PCM文件参数
sample_width = args.sample_width  # 16-bit
num_channels = args.num_channels  # 单声道
sample_rate = args.sample_rate  # 采样率

# 打开PCM文件
pcm_file = open(pcm_path, 'rb')

# 创建WAV文件
wav_file = wave.open(wav_path, 'wb')

# 设置WAV文件参数
wav_file.setsampwidth(sample_width)
wav_file.setnchannels(num_channels)
wav_file.setframerate(sample_rate)

# 读取PCM数据，并写入WAV文件
data = pcm_file.read()
wav_file.writeframes(data)

# 关闭文件
pcm_file.close()
wav_file.close()

print("转换完成！")