mp3的压缩率 通常称为“位率”或者“比特率”比特率是一种数字音乐压缩效率的参考性指标,比特率表示单位时间(1秒)内传送的比特数bps(bit per second,位/秒),通常我们使用kbps(通俗地讲就是每秒钟1000比特)作为单位。CD中的数字音乐比特率为1411.2kbps(也就是记录1秒钟的CD音乐,需要1411....
-t disable writing wav header when using --decode --comp choose bitrate to achive a compression ratio of --scale scale input (multiply PCM data) by --scale-l scale channel 0 (left) input (multiply PCM data) by --scale-r scale channel 1 (right) input (multiply PCM data) by --prese...
7、Compressor 一种动态处理器,您可以指定一个临界音量,一旦信号超过这个临界点,就会启动压缩器的作用,音量会被压抑下来,以让整体音量稳定进行。若音量掉回到临界值以下,压缩器就会停止作用。 8、compression ratio 通常指音乐文件压缩前和压缩后大小的比值,用来简单描述数字声音的压缩效率。©...
Sound acoustic coding compression ratio Sound quality single channel 8Kbps 96:1 Its slightly higher than the short wave radio sound quality monophonic channel 16Kbps 40:1 It is slightly higher than that of the medium wave radio. 32Kbps 24:1 It is similar to FM radio sound stereo 56-64Kbps...
theresearchanddevelopmentofaudiocompressionandcodinghavebeenthoroughlyconducted.Amongalltheaudiocompressionstandards,MPEG-1layer3(MP3)audiocodecisthemostpopularandusedaudiocompressionformatbecauseofitshighcompressionratio,wonderfulperformance.AlthoughMP3decoderalgorithmhasbeenimplementedandusedwidelyinalotofportableandhandheld...
lame_global_flags*gfp=NULL;typedefstructlame_global_structlame_global_flags;structlame_global_struct{unsignedintclass_id;unsignedlongnum_samples;intnum_channels;intsamplerate_in;intsamplerate_out;brate;floatcompression_ratio;...} 另外,在配置lame编码引擎时,有一个lame_set_quality函数用来设定编码的质量。
* rate compression ratio in KHz * @param quality * quality=0..9. 0=best (very slow). 9=worst. * recommended: * 2 near-best quality, not too slow * 5 good quality, fast * 7 ok quality, really fast */public nativestaticvoidinit(int ...
those parts of sound that are hard to be heard even in the original form. This leaves more space for information that is important. This way you can compress audio up to 12 times (you may choose compression ratio) which is really significant. Due to its quality MPEG audio became very ...
* rate compression ratio in KHz * @param quality * quality=0..9. 0=best (very slow). 9=worst. * recommended: * 2 near-best quality, not too slow * 5 good quality, fast * 7 ok quality, really fast */ public native static void init(int inSampleRate, int channel, int mode, ...
The results suggest that MP3 compression on digital Doppler US signals is feasible at 128 kbps, with a resulting 11:1 compression ratio, without compromising clinically relevant information. Higher compression ratios led to significant differences for both signal sources when compared with the ...