Sharing of technology for no distortion: According to the forecast of iSuppli, in 2009, the global shipment of feature phones and smart phones will exceed 1 billion, accounting for more than 80% of all mobile phone shipments. In the current Chinese mobile phone market, the development of feature phones and smart phones is also the fastest. Among these mobile phones, mobile phone speakers for music playback have become a standard configuration. It can be said that most mobile phones are now music phones. \"Sing whenever you want, sing loudly\" is the requirement for music phones, but mobile phone users often encounter such a situation: the volume of mp3 songs downloaded from the Internet varies. When listening to a certain song, the sound is too low, but after the volume is turned up, when listening to the next song, it is found that the volume is too high, distortion occurs, and the sound quality deteriorates. It is very troublesome and a headache to adjust the volume frequently. In addition, most mobile phone users also like to play music at a relatively high volume for a long time. Due to the high output power, the speaker is overloaded for a long time, which can easily damage the speaker, resulting in a high rate of mobile phone repairs. These two problems are also the concerns of mobile phone baseband design engineers. When designing audio modules, they often have to repeatedly adjust the gain of the audio amplifier, hoping that the volume is loud without cracking. Is there a better way to solve these two problems? Yes! The following focuses on a non-crack noise (NCN: Non-Crack Noise) technology, which can effectively solve these two difficult problems in the mobile phone audio system, so that baseband engineers do not need to spend too much energy, and the designed mobile phone can easily achieve the goal of \"singing whenever you want, singing loudly\". Why do we need the non-crack noise (NCN) function? In a song, the sound is loud in some periods and quiet in other periods. The range from the maximum sound to the minimum sound is the dynamic range of this song. The dynamic range of a general song is 40-60dB. The figure below is a waveform curve of an ordinary mp3 song.
You Might Like
Recommended ContentMore
Open source project More
Popular Components
Searched by Users
Just Take a LookMore
Trending Downloads
Trending ArticlesMore