A brief introduction to videogmaes

Complete Game Information：

• 1、AUDIO related knowledge

AUDIO related knowledge

DVD-Audio is an extension of the currently popular DVD disc format. The difference is that it can transmit high-quality audio data of a new standard that cannot be carried by all previous audio carrier formats. The most eye-catching feature of DVD-Audio is its multi-channel audio capabilities, which has proven to be the best choice for automotive entertainment equipment. Similarly, DVD-Audio has many high-value-added multimedia features that are unmatched by CDs.

Qwen2-Audio Speech Model Knowledge Points Summary Qwen2-Audio Speech Model allows users to communicate with large language models directly through speech without going through traditional ASR (Automatic Speech Recognition) systems, thus retaining some characteristics of speech, such as the speaker's tone and emotion. This feature avoids feature loss issues that ASR systems can cause.

AAC (Advanced Audio Coding) codecs have a wide range of applications. The audio quality of codecs is high-fidelity. Its purpose is to replace the mp3 format, because mp3 is lossy compression and has a certain loss on audio quality, while AAC has a significant impact on the original data. The loss will be much smaller and the compression rate will be high. Currently, more than 90% of live broadcast systems on the market use AAC (although OPUS has the best performance, the rtmp protocol does not support OPUS).

The basics of audio sound: The vibration of an object causes fluctuations in the air in the space to resonate and pronounce, which then spreads through the atmosphere and is felt by the human auditory nerve. Three elements of sound: Loudness: It is related to the amplitude of sound vibration. The greater the force, the greater the vibration of the eardrum and the louder the sound. Tone: It is mainly related to frequency. The higher the frequency of the sound wave, the higher the tone.

The sampled and quantized signal needs to be converted into digitally encoded pulses, a process called encoding. PCM technology only includes sampling and quantization, and does not include coding. A common audio coding protocol is AAC (Advanced Audio Coding), which is divided into two file formats: ADIF and ADTS. ADIF: Audio data exchange format. Only the front end of the audio data has a header byte. It is often used in disk files.