常用的sox指令

sox下载地址：https://sox.sourceforge.net/

一些实用的音频格式转换

1. pcm转wav
   sox -r [sampling rate] -b [bit] -e type -c [channel] -t [raw] [inputname.pcm] [outputname.wav ]

sox -r 32000 -b 16 -e signed-integer -c 10 -t raw 0.pcm 0_out.wav 

批量处理

for i in $(ls *.pcm);
   do  sox -r 32000 -b 16 -e signed-integer -c 10 -t raw $i ${i%.pcm}_out.wav; 
done

采样率转换

sox   sampleratex.wav   -r   16000  samplerate16k.wav

2. 多通道提取特定通道

sox in.wav out.wav remix 22 7 1 4

批量处理

for i in $(ls *.wav); 
do  sox $i ${i%.wav}_9ch.wav remix 1 2 3 4 5 6 7 8 9 ; 
done

批量轉換pcm 2 wav

INPUT_FILE="/data_ssd/aitd/train_data/speech"
OUTPUT_FILE="/data_ssd/alice/3320/train_data/speech"
for i in $(ls ${INPUT_FILE}/*.pcm);
    do  sox -r 48000 -b 16 -e signed-integer -c 1 -t raw $i ${OUTPUT_FILE}/$(basename ${i%.pcm}).wav; 
done