What is Apt X support in headphones

Many people complain that when listening to music through headphones, the sound quality is very poor. The problem does not concern the headphones or the phone, but the codec that is responsible for transmitting sound signals. Modern phone models have a new apt codec, which is considered better than its analogues.

What is apt x support in headphones

Apt is a technology that allows you to get the highest quality signal through Bluetooth headphones. The essence of the technology is that it compresses sounds during the transmission of signals through the Bluetooth channel.

When is apt x support needed in headphones?

Modern manufacturers of tablets and smartphones make models that do not have a port for connecting headphones. Therefore, the lack of a connector requires you to look for alternative ways to connect headphones. This is when a system for transmitting sound wirelessly is needed.

The second reason is that wired headphones have slightly lower sound quality. This is due to the fact that A2DP technology has a limitation on the transmission of frequencies. Because of this, the sound of the files is slightly distorted. Apt is capable of transmitting audio signals without any deviations. Thanks to modern compression technology, only high-quality sound is transmitted via Bluetooth. More and more people are choosing APT, so it has become widespread and widespread.

APT has two varieties:

1. apt Slowly transmits audio signals wirelessly. Thanks to this technology, with a total sampling of 16 bits and sampling at 48 kHz, transmission of 352 Kbps is ensured. These numbers are considered the norm for receiving a high-quality signal. Often compared to CD, and has almost identical characteristics. But aptX has one serious drawback - signal transmission is slow, so up to 50% of quality is lost in the process. Therefore, the sampling depth is half the normal value.
2. AptX HD. The sampling rate is the same, but the sampling depth increases to 24 bits. This helps to increase the transmission speed, resulting in better sound quality. And thanks to LPCM technology, data transmission is virtually lossless (sound quality almost reaches digital).

Attention! There are a large number of types of codecs. They are selected depending on the compatibility with the device and the technical characteristics of the latter.

Features and Requirements

The most important requirements are independence from other programs and technology performance. The codec requires a large amount of energy to load and transmit signals. Also, the load on the device itself is very high. Outdated versions of smartphones will not be able to support the codec, so you will have to use regular drivers, but you will not be able to evaluate the sound through APT. At the same time, modern models are already capable of supporting the codec.

The requirements associated with apt support apply not only to the smartphone itself, but also to headphones.

To ensure that sound is transmitted well via Bluetooth, the following factors are taken into account:

1. Sampling. The higher it is, the less excess noise is transmitted in the signal (it is close to digital). The frequency range is higher and distortion disappears.Measured in kHz.
2. Sample population. Responsible for sound resolution. The dynamics can increase relative to the increase in the range of various signals. Allows you to transmit more sounds of different frequencies. Measured in bits.
3. At what speed is data transferred? Is the connection speed, and processes and transmits audio signals. In addition, the parameter shows the size of information that is transmitted at some point. The higher the speed, the more information the device transmits. This improves sound quality. Measured in kbps.

Benefits of apt x support in headphones

The codec is capable of compressing audio files with bitrates up to 352 Kbps. And if you install the Qualcomm modification - AptX HD, support for a bitrate of 576 Kbps appears.

In order to transmit signals to headphones, audio stream compression is used. The latter requires good headphone performance. The frequency varies from 10 to 22000 Hz. Therefore, the sound quality is almost identical to CD. But it doesn’t reach vinyl yet.

If we compare the technology with standard Bluetooth codecs, the latter have more disadvantages:

1. Mediocrity of the codec. The signal quality is slightly lower.
2. Communication is often interrupted.

For a high-quality signal, this parameter is necessary. The technology helps compress sound.