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SinWave
- This project produces a sin wave outout from the sound card from 125 Hz to 8 KHz.
probe
- i writing an free losless audio coder, faster on old 486 than flac or ape decoding on pentium 233 MHz !!! the program working, and compression ratio is equal to flac / ape ... On pentium 233 MHz flac decompress time is 26 sec of enya_.w
p02
- digital band-pass filter with a bandwidth of 100 Hz, mean frequency 250 Hz, 0.1 db
ffmpegproxy
- 这两天因为项目需要研究了一下 ffmpeg，非常强大，顺便把我做的音频转换的代码发上来，我们的项目需要是从 wav 转成 44k hz flv，我测试了mp3转换也都是成功的，相信转别的一些常用格式也没问题。-convert audio files use FFMpeg
encoder
- Implementation of a speech codec based on coding of speech at 8 kbit/s using conjugate-structure algebraic-code-excited linear-prediction (CS-ACELP) - We took .wav files that is sampled at 8000 Hz using 16-bit linear PCM. The encoding process i
soundchange
- 对原始语音进行上采样和下采样，分析对比他们的时域图和频谱图。最后对比原始语音、75HZ激励、150HZ激励以及噪声激励下的效果-SOME SIMPLE MANIPULATIONS OF SOUND USING DIGITAL SIGNAL PROCESSING The original sound and its spectrogram Downsampling the waveform downsampling Upsampling the waveform Li
AD9980
- The AD9980 is a complete, 8-bit, 95 MSPS, monolithic analog interface optimized for capturing YPbPr video and RGB graphics signals. Its 95 MSPS encode rate capability and full-power analog bandwidth of 200 MHz supports all HDTV video modes and graphi
T-REC-G.718-200806-I!!SOFT-ZST-E
- 8-32 kbit/s语音和视频的结构误差不稳定窄带和宽带嵌入式变数率编码-The G.718 encoder can accept wideband sampled signals at 16 kHz, or narrowband signals sampled at either 16 or 8 kHz. Similarly, the decoder output can be 16 kHz wideband, in addition to 16 or 8 kHz narrowband. I
question1_12
- Plot the power‐spectrum of the signal at 30.34 seconds. Use an analysis window of 23 ms. Your plot should be labeled as dB in the y‐axis and frequency (Hz) for the x‐axis. Comment very briefly on the spectral characteristic of the signal.