Smartphone audio quality to go up, thanks to NXP chip

Are you worried about audio quality of your smartphones? NXP Semiconductors speaker boost solution may keep you happy.

Improvement in audio quality is a focus area for smartphone vendors. It is an important aspect for users before selecting their devices. Since online videos are growing, users tend to choose devices with better sound quality to ensure they are getting better experience.

NXP, which shipped 20 million first-generation speaker driver ICs in the first 12 months, said its new TFA9895 chip further improves the sound quality of handsets and tablets via a new multi-band compression feature which enhances the way music and voice sound, even at louder speaker volumes.

NXP does not share details of smartphone vendors, which will be deploying the new speaker boost solution.

Vendors such as Sony, HTC, Apple, etc. are well known for improving sound quality.

Smartphone audio quality to go up, thanks to NXP chip

Systems using the TFA9895 or other NXP speaker boost amplifiers can greatly improve the sound from small speakers, typically realizing gains of 6 to 9 dB in output volume and 12 dB in bass response while also improving system reliability.

“With its new multi-band compression algorithm, our latest TFA9895 speaker boost solution helps handset designers get higher-quality sound out of smaller spaces — and do so cost-effectively. For devices where volume is the top priority, we continue to offer the higher-power TFA9890 introduced earlier this year,” said Shawn Scarlett, marketing director, mobile audio solutions, NXP.

The multi-band processing feature in the TFA9895 improves audio quality at louder speaker volumes via more stable high-gain audio imaging. The TFA9895 also adds a high-frequency noise gate that improves the sound of poor-quality audio signals.

TFA9895 offers an integrated small speaker driver, including integrated processing and an on-board 5-volt DC/DC converter, as well as complete protection against speaker failure. Both ICs can deliver 4 watts of peak power into a 4-ohm speaker that is conventionally limited to 0.5 W.

NXP says the new multi-band algorithm and noise-reduction features complement the existing speaker protection algorithm to provide high-quality sound from small speakers.

The feedback-controlled excursion protection prevents distortion caused by hitting the mechanical limits of the speaker, and an advanced clip avoidance algorithm monitors audio performance and prevents amplifier clipping even when the power supply begins to sag.

The system allows for bandwidth extension to increase the low frequency response well below speaker resonance. The device can be configured for stereo systems, allowing synchronization between devices to ensure good stereo imaging.


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