disp_mp3.py 文件源码

def process_data(start,sum_data):
    input_data = read('junk.wav')
    audio_in = input_data[1]
    samples = len(audio_in)
    intvl = start/seg
    k = 0
    var_thres = 2.2
    data_out=[]

    #print "intvl = ",intvl,start,seg
    for i in xrange(intvl):
        buffer_out = []
        for j in xrange(seg):
            buffer_out.append(audio_in[k])
            k = k+1
        cbuffer_out = fft(buffer_out)
        for j in xrange(seg):
            if (abs(cbuffer_out[j]) < var_thres*sum_data[j]):
                cbuffer_out[j] = 0.02*cbuffer_out[j];
        buf_out = ifft(cbuffer_out)
        for j in xrange(seg):
            data_out.append(buf_out[j].real)

    sar = numpy.array(data_out, dtype=numpy.int16)
    write("junk_out.wav",44100,sar)
    cmd4 = 'lame junk_out.wav junk_out.mp3 >enc.log 2>&1 '
    os.system(cmd4)