Bluetooth headphones have revolutionized the way we listen to music and take calls on the go. However, many users have reported poor sound quality when using their Bluetooth headphones for calls. In this article, we will explore the reasons behind this issue and provide some tips on how to improve the sound quality of your Bluetooth headphones during calls.
Understanding Bluetooth Technology
Before we dive into the reasons why Bluetooth headphones sound bad on calls, it’s essential to understand how Bluetooth technology works. Bluetooth is a wireless personal area network (PAN) technology that allows devices to communicate with each other over short distances. It uses radio waves to transmit data between devices, and it operates on the 2.4 GHz frequency band.
Bluetooth headphones use a technology called Adaptive Frequency Hopping (AFH) to minimize interference from other devices. AFH works by rapidly switching between 79 different frequency channels to find the best available channel. However, this technology can sometimes cause issues with sound quality, especially during calls.
Reasons Why Bluetooth Headphones Sound Bad on Calls
There are several reasons why Bluetooth headphones may sound bad on calls. Here are some of the most common reasons:
1. Audio Compression
Bluetooth headphones use audio compression to reduce the amount of data that needs to be transmitted between devices. While compression helps to improve the overall efficiency of the transmission, it can also affect the sound quality. Compression algorithms can sometimes introduce artifacts and distortions that can make the audio sound bad.
2. Bitrate and Sampling Rate
Bluetooth headphones typically use a lower bitrate and sampling rate than wired headphones. The bitrate and sampling rate determine the amount of data that is transmitted per second, and a lower bitrate and sampling rate can result in lower sound quality. For example, Bluetooth headphones may use a bitrate of 128 kbps and a sampling rate of 44.1 kHz, while wired headphones may use a bitrate of 320 kbps and a sampling rate of 96 kHz.
3. Interference from Other Devices
Bluetooth headphones can be affected by interference from other devices, such as cordless phones, microwaves, and neighboring Wi-Fi networks. This interference can cause the audio signal to become distorted or dropped, resulting in poor sound quality.
4. Distance and Obstructions
The distance between the Bluetooth headphones and the connected device can also affect the sound quality. If the headphones are too far away from the device, the signal may become weak, resulting in poor sound quality. Additionally, obstructions such as walls, furniture, and other objects can block the signal and cause interference.
5. Headphone Quality
The quality of the Bluetooth headphones themselves can also affect the sound quality. Cheap or low-quality headphones may not have the same level of sound quality as more expensive or high-end headphones.
Improving Sound Quality on Bluetooth Headphones
While there are several reasons why Bluetooth headphones may sound bad on calls, there are also several ways to improve the sound quality. Here are some tips:
1. Use a High-Quality Headphone
Using a high-quality headphone can make a big difference in sound quality. Look for headphones that have good reviews and are known for their sound quality.
2. Reduce Interference
Reducing interference from other devices can help to improve the sound quality. Try to keep the headphones away from other devices that may be causing interference, and use a device with a strong Bluetooth signal.
3. Use a Bluetooth Signal Booster
A Bluetooth signal booster can help to improve the signal strength and reduce interference. These devices can be placed between the headphones and the connected device to boost the signal.
4. Update Your Headphone’s Firmware
Updating your headphone’s firmware can help to improve the sound quality. Check the manufacturer’s website for updates and follow the instructions to update the firmware.
5. Use a Wired Connection
If you’re experiencing poor sound quality on calls, try using a wired connection instead. Wired connections can provide better sound quality and are less prone to interference.
Conclusion
Bluetooth headphones can be a convenient and comfortable way to take calls, but poor sound quality can be a frustrating issue. By understanding the reasons behind this issue and taking steps to improve the sound quality, you can enjoy better sound quality on your Bluetooth headphones. Whether you’re using your headphones for music or calls, following these tips can help to improve your overall listening experience.
| Headphone Model | Bitrate | Sampling Rate |
|---|---|---|
| Headphone A | 128 kbps | 44.1 kHz |
| Headphone B | 320 kbps | 96 kHz |
In conclusion, while Bluetooth headphones may sound bad on calls due to various reasons, there are ways to improve the sound quality. By choosing a high-quality headphone, reducing interference, using a Bluetooth signal booster, updating the firmware, and using a wired connection, you can enjoy better sound quality on your Bluetooth headphones.
Why do Bluetooth headphones sound bad on calls?
Bluetooth headphones can sound bad on calls due to various reasons. One of the primary reasons is the difference in audio codecs used for music and calls. Music typically uses high-quality audio codecs like aptX, AAC, or LDAC, which provide a high bitrate and low latency. However, calls usually use a different codec, such as SCO (Synchronous Connection-Oriented), which has a lower bitrate and higher latency.
This difference in codecs can result in a noticeable decrease in audio quality during calls. Additionally, other factors like interference from other devices, poor microphone quality, and low signal strength can also contribute to poor sound quality on calls.
What is the SCO codec, and how does it affect call quality?
The SCO (Synchronous Connection-Oriented) codec is a Bluetooth audio codec specifically designed for voice calls. It is optimized for low latency and low bitrate, which allows for real-time communication. However, this optimization comes at the cost of audio quality. The SCO codec typically operates at a lower bitrate than music codecs, which can result in a less detailed and less clear audio signal.
The SCO codec’s limitations can be particularly noticeable in noisy environments or when the caller is speaking in a quiet voice. In such cases, the codec’s low bitrate can struggle to capture the nuances of the speaker’s voice, leading to a poor call quality. Furthermore, the SCO codec’s low latency can sometimes introduce audio artifacts like echo or distortion, which can further degrade the call quality.
Can I improve the call quality on my Bluetooth headphones?
Yes, there are several ways to improve the call quality on your Bluetooth headphones. One of the simplest methods is to ensure that your headphones are properly paired with your device and that the connection is stable. You can also try moving to a quieter environment or reducing background noise to improve the microphone’s ability to pick up your voice.
Additionally, some Bluetooth headphones come with features like noise cancellation or wind noise reduction, which can help improve call quality in noisy environments. You can also try using a different codec, such as aptX or AAC, if your device and headphones support it. However, this may require tweaking your device’s settings or using a third-party app.
Do all Bluetooth headphones sound bad on calls?
No, not all Bluetooth headphones sound bad on calls. While the SCO codec’s limitations can affect call quality, some headphones are designed to mitigate these issues. For example, some high-end headphones may use advanced noise cancellation or audio processing techniques to improve call quality.
Additionally, some headphones may use alternative codecs, such as aptX or AAC, for calls, which can provide better audio quality. However, these headphones may require specific device support or settings to enable these codecs. It’s essential to research and read reviews before purchasing Bluetooth headphones to ensure they meet your call quality expectations.
Can I use my Bluetooth headphones for video calls?
Yes, you can use your Bluetooth headphones for video calls. However, the call quality may vary depending on the headphones and the device you’re using. If you’re using a device with a high-quality camera and a stable internet connection, the video quality should be good. However, the audio quality may still be affected by the SCO codec’s limitations.
To improve the audio quality on video calls, you can try using a different codec or enabling noise cancellation features on your headphones. You can also try using a wired connection or a different audio device, such as a USB headset, for better audio quality.
Are there any Bluetooth headphones specifically designed for calls?
Yes, there are Bluetooth headphones specifically designed for calls. These headphones often prioritize call quality and may use advanced noise cancellation or audio processing techniques to improve the audio signal. Some examples of call-centric Bluetooth headphones include business-focused headsets or headphones designed for use in noisy environments.
These headphones may also use alternative codecs or have features like multiple microphones to improve call quality. When shopping for Bluetooth headphones for calls, look for models with features like noise cancellation, wind noise reduction, or advanced audio processing to ensure the best possible call quality.
Can I use a Bluetooth headset with a boom mic for better call quality?
Yes, using a Bluetooth headset with a boom mic can improve call quality. Boom mics are designed to capture your voice more clearly and reduce background noise. They are often used in business or professional settings where clear communication is essential.
A Bluetooth headset with a boom mic can provide better call quality than traditional headphones because the mic is positioned closer to your mouth, reducing ambient noise and capturing your voice more clearly. Additionally, some boom mics may use noise cancellation or wind noise reduction features to further improve call quality.