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JAVA的声音处理方法 (转自伊氏女人)-----淘特网
- 数字音频格式有很多种,其质量与采样频率和采样精度两个参数有关。频率的表示单位为赫兹〔Hz〕,它表示每秒采样次数。采样频率越高,音质就越好。采样精度为每次采样所存储的数据数量,它决定每个数字信号所能够表示的离散振幅的数量。存储每个样本的数据越多,音质就越好。但是高品质的声音需要占用大量的内存和磁盘空间。考虑到网络带宽,在Internet连接上传输就需要花费很长的时间。对于Applet来说,保证声音文件的最小化是极为重要的。-digital audio format there are many,
sample rate process
- 采样率转换代码,在数字信号处理过程中,实现不同采样率系统的数据传送。-sample rate conversion code in digital signal processing to achieve different sampling rate of data transmission.
subr
- VHDL 8位无符号除法器 试验报告 计算前在A和B端口输入被除数和除数,然后在Load线上送高电平,把数据存到除法计算电路内部,然后经过若干个时钟周期,计算出商和余数,并在C和D端输出。 其实现方法是,将除法器分为两个状态:等待状态与运算状态。 开始时除法器处于等待状态,在该状态,在每一时钟上升沿,采样Load信号线,若是低电平,则仍处于等待状态,如果采样到高电平,除法器读取A,B数据线上的输入数据,保存到内部寄存器a_r,b_r,置c_r为0,d_r为a_r,判断除数是否为零,若
BmpViewer
- to show the waveform of audio file and play it on computer Purpose: Familiar with WAV file format and UI design It should have the following functions: Provide a Graphic User Interface for user to browse the file system and select one WAV file
WavPlayer
- to show the waveform of audio file and play it on computer Purpose: Familiar with WAV file format and UI design It should have the following functions: Provide a Graphic User Interface for user to browse the file system and select one WAV file
pcmcode
- 将输入A律PCM编码器的正弦信号采样,进行PCM编码,求出编码器的输出码组序列。-legal importation A PCM encoder sinusoidal signal sampling, PCM coding, coding obtained the output code sequence.
FSK_GEN
- FSK信号发生器,用于软件测试.采样率、波特率,幅度,f1,f2可调,不含wave头,样点类型I16,保存为文件-FSK signal generator for software testing. Sampling rate, baud rate, magnitude, f1, f2 adjustable, excluding the first wave, point-like type infarction, preservation of documents
generate_mod_signal
- 产生15种模拟及数字调制信号函数。参数说明:type-调制信号种类,total_time-信号总时间长度,fc-载频,fs-抽样频率,symbol_rate-符号率-have 15 analog and digital modulation signal function. Parameter Descr iption : type-modulated signal types,'04-Signal total time length, fc-carrier frequency, fs-
fir-random
- 编程实现: 低通数字滤波器的设计。 设计一低通FIR滤波器,对应的模拟系统的幅度响应 抽样频率10kHz,过渡带0.5kHz,用窗口法设计。 画出数字滤波器频率响应。 连续信号经过10kHz抽样后,通过该数字滤波器,分析输入和输出的频谱。 -Programming : low-pass digital filter design. Design an FIR low-pass filter, the corresponding simulation system r
zsylbq
- 我做的一个自适应滤波器,可以虑除杂波,适合信号采样之后的数字滤波-I do an adaptive filter, in addition to taking into account clutter suitable for signal sampling after the digital filter
SPCE061.doc
- 单片机正弦信号产生中改变正弦消耗频率时仍然保持采样频率的算法-SCM sinusoidal signal to change consumption frequency sinusoidal remained sampling frequency algorithm
filter-of-the-audio-signal
- 简单的语音信号的采样及滤波,以音乐片段为例-the sampling and filtering of the audio signal,such as music
Signal-recognition
- 函数可以作出时域波形图和频域频谱图,并且计算基因频率自动判断音频文件是男声还是女声声音。ds函数输入变量是文件名和降采样的间隔,通过插值的办法保证了原信号的长度,可以画出时域及频域图像,并且判断男女声,最后播放降采样之后的声音-The function can make time-domain waveform and frequency spectrum, and calculate the gene frequency automatically determine the audio fi
Untitled
- 使用程序,显示原始图像,对程序进行操作,采集原始图像的波形,以及上下采样信号的波形-Use the program to display the original image, the operation of the program, the acquisition of the original image waveform, and the upper and lower sampling signal waveform
GPS-Satellite-Signal-Aquisition-and-Tracking
- This GPS signal acquisition and tracking program. GPS data is included in the program files. If you want to test another GPS signal, you have run sampling of 5.714[MHz] -This is GPS signal acquisition and tracking program. GPS data is includ
Measuring Signal Similarities
- Comparing Signals with Different Sampling Rates
Inst_FFT
- 提供采样频率、窗口长度和加载信号。单击信号上的任意点。程序在点的两侧创建一个给定长度的窗口, 并计算并显示 FFT。(Provide the sampling frequency, window length and load the signal. Click on any point on the signal. Program creates a window of given length on either side of the point and calculates and di
EEG Signal Processing
- 脑电信号的完整处理过程,包括抽样,滤波,加窗,时域频域的图像分析等(EEG signal processing, including sampling, filtering, windowing, time domain frequency domain image analysis,and so on.It is very useful in EEG.)
NongLiangZHongXinFa
- 利用频谱线的能量重心原理完成对非整周期采样信号的频谱的幅值和相位的校正。(The amplitude and phase correction of the spectrum of the non periodic sampling signal is completed by using the energy barycenter principle of the spectrum line.)
Sparse image and signal processing
- 这本书在稀疏的多尺度图像和信号处理提出了艺术状态,包括线性多尺度变换,如小波,脊波和曲波变换、非线性、多尺度变换基于中值和数学形态学算子。最近的稀疏性和形态多样性的概念描述和利用各种问题,如去噪,反问题正规化,稀疏信号分解,盲源分离,压缩感知。 这本书的理论和实践研究相结合的领域,如天文学、生物学、物理学、数字媒体应用和取证。最后一章探讨了信号处理中的一个范式转换,表明以前的信息取样和提取的限制可以用非常重要的方法加以克服。 MATLAB和IDL代码伴随这些方法和应用程序重现。 实验并说明