All items tagged with filters (20)

audioXpress September 2024 Is Live. Make Smart Audio Moves!

August 12, 2024 by audioXpress Staff

audioXpress September 2024 Is Live. Make Smart Audio Moves!

There's a lot of knowledge in audioXpress September 2024. There's a residential installation and home theater Market Update, and a review of the Dayton Audio iMM-6C USB-C Test Microphone. George Ntanavaras shares what he learned using AKABAK simulation software, and Charlie Laub explains all about Derived from Elliptic crossover filters. Read Jan Didden's interview with Joachim Gerhard discussing Low Noise Phono Stages, and learn how to build a Moving-Coil Phono Preamp designed by Sam Dulaney. And much more.

Better Acoustics, Better Designs in audioXpress August 2024!

July 12, 2024 by audioXpress Staff

Better Acoustics, Better Designs in audioXpress August 2024!

audioXpress August 2024 features our traditional Acoustical Solutions Round-Up, while Active Acoustic Enhancement Systems are also discussed in the Sound Control column. Oliver Masciarotte reports from AXPONA 2024, Philipp P. Klose reviews the new IK Multimedia ARC Studio solution, and Brewster LaMacchia expands on alternative power schemes for audio applications with A2B. On audio electronics, Charlie Laub explores Notch Filters, and Todd Schneider details his High-Fidelity Active Direct Box project.

Patent Review: Acoustic Filter for Omnidirectional Loudspeaker

June 5, 2024 by James Croft

Patent Review: Acoustic Filter for Omnidirectional Loudspeaker

This is an interesting patent awarded to Lakshmikanth Tipparaju, Allan Devantier, William Decanio, and Andri Bezzola, on behalf of Samsung Electronics - effectively the audio research team that Samsung created in Valencia, CA. The industry has attempted to achieve a successful implementation of acoustic radiation closely coupled to a boundary surface for omnidirectional and subwoofer applications - unfortunately, mostly plagued by resonances generated by the waveguide or reflector surface. This new approach appears to be an effective solution.

Loudspeaker Bass Reflex Alignments

June 5, 2024 by Claus Futtrup

Loudspeaker Bass Reflex Alignments

The use of standard filter alignments represents a foundational concept in the loudspeaker industry, with an impact nearly as significant as the invention of the electro-dynamic loudspeaker principle itself. As one of the creators of Speakerbench, a web-based speaker design tool, in collaboration with Jeff Candy, Claus Futtrup is in a unique position to discuss the evolution of enclosure designs based on this electrical filter theory, including the concept of an alignment chart.

Eventide Faithfully Recreates Iconic Sound of Legendary H3000 Ultra-Harmonizer as Plug-In

May 3, 2024 by Joao Martins

Eventide Faithfully Recreates Iconic Sound of Legendary H3000 Ultra-Harmonizer as Plug-In

Eventide announced the second generation of its universally acclaimed H3000 plug-ins, delivering a 1:1 recreation in digital form of its legendary H3000 Harmonizer. As one of the most famous hardware effects processors in history, the H3000 has set the gold standard in commercial studios around the world since its original launch in 1988. The new H3000 Factory Mk II and H3000 Band Delay Mk II plug-ins deliver the same timeless sound in an inspiring, flexible design for every DAW.

January 25, 2024 by Joao Martins

Waves Audio Showcases AI-Driven Innovations Making Voice Calls Crystal-Clear In Any Noisy Environment

At CES 2024, Waves Audio demonstrated its latest DSP solutions applied to multiple consumer electronics and mobile products categories, now reinforced with AI/ML, adaptive and perceptual algorithms. An outstanding example of how Waves is leveraging AI-enhanced technologies is delivered in the new SoloMode audio filtering software, which makes the user's voice crystal-clear in smartphone audio or video calls, even in the presence of noise from multiple voices in the background.

You Can DIY! Build the Popping P Filter

November 1, 2023 by Ethan Winer

You Can DIY! Build the Popping P Filter

This original circuit effectively removes the low-frequency impulses caused by air blasts from a person speaking or singing into a microphone, as well as "plosives." This analog circuit removes these irritating sounds in real time, directly at the source by applying a 24-stage all-pass filter to delay only the lower frequencies of the main audio stream. This original circuit for non-commercial use is available for licensing for commercial manufacture. This article was originally published in audioXpress, October 2023.

audioXpress October 2023 Speaker Builder Issue Is Now Available!

September 11, 2023 by audioXpress Staff

audioXpress October 2023 Speaker Builder Issue Is Now Available!

In the October 2023 issue of audioXpress, Jan Didden visits Dutch & Dutch, Reinhold Lutz shares a practical way to measure loudspeakers in any room with his AudioChiemgau Mode-Compensator, which is tested by Rens Tellers. We have two DIY open baffle projects from Perry Marshall and Charlie Laub, Richard Honeycutt writes about the Western Electric 91E, and Ethan Winer shares his Popping P Filter circuit. In the Sound Control column, Honeycutt explores Passive Variable Acoustics, and Chuck Hansen concludes his article series on Power Transformers. audioXpress October 2023 is now available in print, digital, and online.

R&D Stories: How to Choose the Right Signal Processing Technique

December 1, 2022 by Dave Betts

R&D Stories: How to Choose the Right Signal Processing Technique

The Chief Science Officer at AudioTelligence discusses the merits and challenges of using beamforming and blind source separation techniques to correctly process voice sources from the audio signals picked up by microphones in real-world situations. This article explains how these signal processing techniques can help deal with the noises that make it difficult to pick out and clearly hear voice, and how to obtain clean audio signals picked up by microphones contaminated with interference, noise, and reverberation. This article was originally published in audioXpress, November 2022.

How Signal Processing and Filter Bank Design Impacts Sound Quality in Hearing Aids

September 1, 2022 by Dana Helmink

How Signal Processing and Filter Bank Design Impacts Sound Quality in Hearing Aids

When digital audio processing is performed in hearing aids, it’s meant to have a demonstrable impact on wearers’ lives. Therefore, doing it well is important. In this article, Dana Helmink, Senior Director, Audiology/Clinical Education at Widex USA, discusses the nuances of signal processing and filter bank design, exploring the most impactful decisions in filter bank types specific to hearing aids, and how ultimately each approach helps dealing with the hearing challenges that people face. This article was originally published in audioXpress, June 2022.

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