All items tagged with distortion (31)

Cirrus Logic and Compal Electronics Join Forces to Pioneer AI-Powered Audio Enhancement for Laptops

May 21, 2025 by audioXpress Staff

Cirrus Logic and Compal Electronics Join Forces to Pioneer AI-Powered Audio Enhancement for Laptops

Cirrus Logic announced a strategic collaboration with Compal Electronics from Taiwan to develop AI technology aimed at solving persistent audio quality challenges in laptop computers. The partnership will leverage Cirrus Logic's expertise in audio processing and Compal's design and manufacturing experience to address mechanical rattle and audio distortion issues that have long plagued the PC industry. This initiative represents Cirrus Logic's first AI audio technology designed specifically for the PC market.

Non-Linear Amplitude Modulation of Loudspeakers

February 12, 2025 by Reinhold Lutz

Non-Linear Amplitude Modulation of Loudspeakers

Even a perfectly linear loudspeaker produces two types of distortions because of the movement of its membrane. First Doppler distortions, a.k.a. Phase Modulation (which the author addressed in his October 2024 article for audioXpress), and secondly distortions stemming from the Nonlinear Amplitude Modulation, characterized in this article. More importantly, this article also addresses how these harmonic and intermodulation spectral line distortions can be minimized and eliminated in loudspeakers.

DPA Unveils Latest CORE+ Patent-Pending Microphone Innovation

January 24, 2025 by Joao Martins

DPA Unveils Latest CORE+ Patent-Pending Microphone Innovation

DPA Microphones announced its new patent-pending CORE+ technology that the Danish manufacturer says sets a new standard for distortion-free microphone sound. Touted as a groundbreaking innovation, DPA says that CORE+ eliminates the non-linearities typically generated by the membrane and electronic components of a microphone to redefine what’s possible in sound capture. The technology was unveiled at NAMM 2025 and will be presented also at ISE 2025.

Audio Electronics: Is Digital Jitter Really a Problem?

February 7, 2024 by Ethan Winer

Audio Electronics: Is Digital Jitter Really a Problem?

Since the dawn of the digital era decades ago, the timing error known as "jitter" in A/D/A converters has been accused of harming audio fidelity. Some people claim that jitter adds audible distortion and noise, affects bass fullness, and even harms stereo imaging width and depth. This article explains what jitter is, what causes it, and even lets you hear jitter in controlled amounts so you can decide for yourself how damaging it really is. Originally published in audioXpress, January 2024.

Selecting Electrolytic Capacitors for Lowest Distortion

January 11, 2024 by Douglas Self

Selecting Electrolytic Capacitors for Lowest Distortion

Douglas Self shares real experiments when selecting electrolytic capacitors to achieve the lowest distortion. An experiment inspired by his recent audioXpress article, "Optimizing Variable-Frequency Tone Controls," available online. This short piece is an interesting closer examination on the subject for audio circuit designers. Originally published in The Audio Voice newsletter, #453, January 11, 2024.

audioXpress November 2023 Takes You to the Edge of Audio Development

October 11, 2023 by audioXpress Staff

audioXpress November 2023 Takes You to the Edge of Audio Development

audioXpress November 2023 offers an exclusive in-depth report on optical MEMS microphone technology from sensiBel, and understand how microphones can impact active noise cancellation performance. Learn how a new ADC Hybrid Gain Control IC enables smooth microphone preamp gain changes, and how to use DSP for hearing enhancement applications. Explore a Motion Feedback (MFB) approach enabling effective active desktop subwoofers, and recap on a century of Home Loudspeaker Development.

Audio Myths: Feedback Re-Entrant Distortion. Should We Worry?

September 14, 2023 by Jan Didden

Audio Myths: Feedback Re-Entrant Distortion. Should We Worry?

There are many aspects of negative feedback in audio that are the subject of continued discussion. Jan Didden continues to debunk more Audio Myths. This article addresses re-entrant distortion. The idea is that, since negative feedback sends some of the distorted output signal back to the input, this already-distorted signal would only get more distorted by going through the nonlinear amplifier, over and over again.

Patent Review: Improved Speaker Structure by Jazz Hipster

June 28, 2022 by James Croft

Patent Review: Improved Speaker Structure by Jazz Hipster

This article reviews a patent application submitted in 2010 by to two inventors, on behalf of Jazz Hipster Corp. (Taiwan), regarding an improved structure of a speaker using the surround to reduce the resistance of the diaphragm excursion, which helps to generate a more linear diaphragm movement, with less resistance, and reduced distortion. As James Croft noted, the approach had been used in the past, but its use decreased due to the high-performance achieved with well-designed roll-surrounds, at a lower cost. No surprisingly this patent was subsequently abandoned.

HEAD acoustics Proposes Multi-Dimensional Audio Quality Score as Standard Method for Audio Quality Assessment

April 22, 2022 by Joao Martins

HEAD acoustics Proposes Multi-Dimensional Audio Quality Score as Standard Method for Audio Quality Assessment

MDAQS or Multi-Dimensional Audio Quality Score, is a new binaural perception-based software tool that replaces human evaluation with novel metrics in the assessment of audio quality. This is a much needed approach for characterization of headphones, earphones, speakers, and any audio system, including automotive audio designs, researched, documented and validated by audio test and measurement company HEAD acoustics.

Some Speaker Problems That Needed Solving

October 7, 2021 by Bruno Putzeys and Lars Risbo

Some Speaker Problems That Needed Solving

In this article for Voice Coil, the two co-founders of Purifi Audio share some details about the company's unique research with loudspeakers, and reveal their findings in looking for the roots of speaker nonlinearities and distortion mechanisms. A research effort that the authors believe deserves consideration from the industry, as a new set of standard parameters that should be included in datasheets. This article was originally published in Voice Coil, August 2021.

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