audio watermarking

1. Order The audio decoding process in Mplayer is analyzed step by step. Audio Decoding, including the video decoding mentioned later, does not involve specific formats and decoding algorithms. If you are interested in the format and decoding of object files, you can find relevant information on the Internet ~ You can also pay attention to post on popy (advertisement ~ ) Ii. Portal The entry in the main fun

The point to note here is that the interface we're talking about actually includes a discussion of the two aspects of "interface" (interface) and "connectors" (connector), which we often call "connectors" or "plugs." "Interface" defines the physical characteristics of the connection between electronic devices, including the frequency and intensity of the transmitted signal, the type and quantity of the corresponding connection, and the structural design of the plugs and sockets, and the connecto

Audio BasicsWhat are the important attributes of sound? Loudness (loudness) Loudness is the size of the various sounds that humans can perceive, that is, the volume. Loudness is directly related to the amplitude of sound waves. Tone (Pitch) The tone is related to the frequency of the sound, and the greater the frequency of the sound, the higher the tone the human ear perceives, or the lower it will become. Tone (Qu

I. Basic Concepts 1 bit rate: the number of bits required for encoding (compression) audio data per second. The unit is usually kbps. 2. Sound Intensity: the subjective attribute of a sound indicates the degree to which a sound is heard. The intensity of the sound changes, but it is also affected by the frequency. In general, the intermediate frequency pure audio is better than the low frequency and hig

Go from Android 4.1 audio system Change instructions to Android 4.1, English code abbreviation for JB. In the eyes of the Chinese people, the word jb is also a little related to animals. Google so frequently modified Android, finally launched a can be all day jb JB hanging in the mouth of the version. Later my article can also use JB to express the version number, one side with JB said Chairman Mao often said "strategic contempt." Please, according to

HTML5 audio practices, Web music player development Today we are developing a webpage music player based on HTML5 audio. In the new HTML5 features, audio and video are our new elements of interest. We can finally develop audio and video players from Flash. For a new HTML element, it is nothing more than attributes, eve

We compared and tested the sound quality of 16-, 20-, and 24-bit quantified digital audio data in the lab, testers with "golden ears" will use their feelings to tell you the difference between the quantization precision of different bit numbers. Through these test results, you can even see the differences between different sampling frequencies. The results of testing in well-equipped acoustic recording studios are very convincing. We can see what the

The previous articles show how to capture audio using the Audiorecord provided by Android in the Java layer, play audio with audiotrack, and encode and decode using MEDIACODEC, which are Java layer APIs provided by Android , whether it is acquisition, playback, or codec, these API interfaces need to copy audio data from Java to the native layer, or from the nativ

File Log Address http://blog.csdn.net/q1056843325/article/details/60336226Audio and video have become more and more popular nowIndividual websites to ensure cross-browser compatibilityStill choose to use flash(source is cut from Youku)Multimedia label UsageHTML5 adds audio and video two multimedia tagsCompatibility is good, low version IE does not supportAllows us to insert audio and video controls without

Li pengjun, Android Project Director of AI totem, finalized the speech subject: Android audio Port Data Communication Development Topic Introduction: Li Peng will explain how to implement bidirectional communication between audio ports and external devices based on Android audio interfaces based on the development practices of AI totem and hardware. Personal Pr

By default, the sampling rate of Android sound is fixed to 44.1 kHz, and the recording sampling rate is fixed to 8 kHz, therefore, the underlying audio device drivers only need to set these two fixed sampling rates. If the sampling rate transmitted from the upper layer does not match the sampling rate, the android framework layer performs resample processing on the audio stream. The resample process is as f

Android calls your own recorded audio program Android has its own audio recording program, we can specify an action MediaStore.Audio.Media.RECORD_SOUND_ACTION intent to Just start it up. Then, in the Onactivityresult () method, get the intent data, which is the corresponding URI of the recorded audio. Java code: Copy Code code as follows: Package Eo

C Language resolution WAV audio file code address: Github:github.com/casterwx/c-wave-master Directory Objective Understanding WAV Audio Files What is a binary file Binary format parsing of WAV C language parsing WAV audio files Two details Summarize In the computer has a variety of files, such as EXE executable file, jpg This image fil

Recently I bought the most expensive headset I have ever purchased: Baiya dt131. According to official instructions, this is an entry-level hifi headset. however, when I received the goods and started to try it out, I was a little disappointed: the sound quality was similar to that of the goods sold for dozens of dollars, and the appearance was still ugly. I started to query the relevant information online. After one afternoon and one night, I finally figured it out. HIFI is short for English

real-time audio and video domain UDP is the kingly The Transport layer scheme for real-time audio and video interaction on the Internet has two types: TCP (e.g. RTMP) and UDP (e.g. RTP). The TCP protocol provides a relatively reliable guarantee for data transmission between two endpoints, which is achieved through a handshake mechanism. When the data is passed to the receiver, the receiver checks the correc

Two ways of synchronizing audio and video synchronization with the time stamp as the benchmark with the time stamp of the video as the benchmark with the external clock as the reference to the standard audio-video synchronization This is a digression. This blog theme is not write audio and video synchronization but write audi