What does "aptX" or "AAC" mean by Bluetooth earphones?(＠Dime) --Yahoo! News

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Bluetooth earphones that are convenient for cordless and enjoy music. In particular, many people use completely wireless earphones that can be easily removed from the mask at present. Although it is such a Bluetooth earphone, you have ever confirmed that there is a notation such as "APTX" or "AAC" while watching products at EC sites and electronics retailers? This time, I will introduce these meanings called "codec". Understanding the codec changes how to select an earphone!? In order to play music or video audio with Bluetooth earphones, basically, the voice file must be compressed with a playback device such as a smartphone, and the data must be transmitted to the earphone. not. A codec in wireless earphones refers to the "voice compression conversion method" used to transmit music and audio files from devices to earphones. As for the image, there are multiple types of codecs, as there are multiple types of single -type batteries, single -type batteries, AA batteries, and multiple types of batteries, even if they are called "batteries". That is the standard such as "APTX" and "AAC" that appeared at the beginning. Bluetooth earphones and smartphones have codecs that are compatible with them, and each has its own characteristics. If you want to enjoy higher sound quality or enjoy a less delayed voice, you need to choose a product that supports the suitable codec. There are four typical codecs used in Bluetooth earphones: "SBC", "APTX", "AAC", and "LDAC". let's go. Bluetooth earphone codec [SBC] SBC is an abbreviation of "Subband Codec" and refers to voice compression technology used by Bluetooth products as standard. Bluetooth devices basically support SBC, so even if you buy wireless earphones without worrying about codecs, you can connect to your smartphone to play music. Bluetooth earphone codec [aptX] AptX is a codec that is mainly used in models such as Android smartphones. It has a lower compression rate compared to SBC, high sound quality and low delay. If you want to play higher -definition music or less delayed music with Android smartphones, we recommend a product that supports APTX. Bluetooth earphone codec [AAC] AAC is an abbreviation of "Advanced Audio Coding", and is a codec that is mainly used in Apple products such as iPhone. This is also a feature of high sound quality compared to SBC, so if you want to connect to your iPhone and hear more beautiful sounds, we recommend AAC compatible wireless earphones. Bluetooth earphone codec [LDAC] LDAC refers to voice compression technology developed by Sony and can transmit high -resolution sound sources via Bluetooth. Due to the mechanism of compressing and transmitting the audio file once, it is difficult to play high -resolution sound sources with Bluetooth earphones, but if it is an LDAC, it is possible to transmit high -resolution sound sources almost as it is. This is because LDAC can send about three times the amount of data compared to conventional codecs. This allows the Bluetooth earphone to play the "high -resolution class" sound. * Data was examined as of early June 2021. * The information is made thorough, but it does not guarantee the integrity and accuracy of the content. * Please use the product at your own risk. Sentence/Fumihiko Sato

@Dime editorial department