pcm flash

PCM Definition PCM Chinese called pulse code modulation, composed of. rivers proposed in 1937 that this concept laid the foundation for digital communication. In 1960s, it began to be applied to the local telephone network to expand the capacity, so that the transmission capacity of most existing audio cable core lines was increased by 24 ~ 48 times. By the middle and end of 1970s, various countries have s

Record PCM lock information in GRD It is located in the SGA of each instance However, each instance only contains part of GRD, And the GRD of all instances is a complete GRD. PCM lock has three main attributes: Mode, Role, and PI. ① Mode -- S -- X -- NULL For S and X lock modes, we will not repeat them here NULL indicates that the corresponding memory space can be reused. Before being reused, the instance c

Using System; Using System.IO; Using System.Text; Using System.Windows.Forms; Using System.Runtime.InteropServices; namespace TRAIN.WAV2PCM {public partial class Frmmain:form {/// There is nothing to do today, write a wav "= =" PCM file conversion program. Let's announce that we learn together. The PCM file is not played and is not known to be successful. only when studying.

Another product of the company, when monitoring CTI, the recording format is PCM.To play in IE, You need to convert it into a standard WAV. previously, I used a com library for conversion. Now I can't use that library for various reasons (64-bit support is not good), So I implemented it in Java. The basic code is as follows.In fact, WAV is only a PCM file with the relevant file header and description information, not complicated. This program referenc

Document directory Notes: General discussion of riff files: References: The wave file format is a subset of Microsoft's Riff specification for the storage of multimedia files. A riff file starts out with a file header followed by a sequence of data chunks. A wave file is often just a riff file with a single "wave" chunk which consists of two sub-Chunks -- a "FMT" chunk specifying the data format and a "data" chunk ining the actual sample data. call this form the "canonical form ". who kno

Another product of the company, when monitoring CTI, the format of recording is PCM.In order to be able to play in IE, you need to convert to a standard WAV. Used to be a COM library to do the conversion, now for a variety of reasons can not use the library (64-bit support is not good, etc.), the implementation of a java. The basic code is as follows.In fact, WAV is only PCM file plus related file headers and descriptive information, not complicated.

Preface:In the embedded development, such as uboot transplant, the kernel transplant all need to have the basic understanding to the flash. Here's a look at the relationship in Flash in the titleone, the memory storage structure of FlashFlash is divided into two types according to the internal storage structure:NOR FlashAndNAND Flash。Norflash is easy to use, easy

Large-scale concurrency of Web Systems-flash sales and flash sales for e-commerce and flash sales for web E-commerce Flash sales and flash sales of e-businesses are not a stranger to us. However, from a technical point of view, this is a huge test for Web systems. When a Web

One-click USB flash drive _ How to use a USB flash drive to install the system-Windows XP system and Windows 7 system tutorial-one-click USB flash drive boot disk creation tool tutorialStep 1: preparations and precautions before preparation 1. Download the one-click USB flash drive system software (Note: The computer m

How to disable USB flash drives on the company's computer, prohibit USB flash drives from copying computer files on the company's computer, and prohibit USB flash drives on the computerAt present, USB flash drives are frequently used, and the read/write speed and storage space are getting bigger and bigger. Although it

FLASH implement ASP. net mvc upload --- Flash, mvc --- flash Let's take a look at the overall idea. The entire upload is at the entrance of the flash button. Create Flash, add a button, and name it btn Add class main. Package {import