Simulation Techniques: Room Gain

Room Gain is a term not used in acoustics textbooks as such. Room acoustics is naturally often discussed in the hifi community, since the room you put your loudspeakers in will heavily influence the sound that reaches your ears, both at low and high frequencies. In these discussions the term "room gain" sometimes comes up. This article was inspired by Erik Wiederholtz (CTO of Perlisten Audio) and his interest in the topic, and he was kind enough to provide measurements and photos from his own listening room for a sealed subwoofer as well as for a vented subwoofer.

This article explains the new hybrid gain control (HGC) feature of Cirrus Logic’s latest CS530xP family of Pro Audio ADCs and how these can eliminate noise problems when changing gain on digitally controlled mic preamps. This solution enables fine-resolution mic preamp gain control, with the feel of a traditional potentiometer but without audible pops or zipper noise by integrating control into the ADC, together with zero-cross detection and precisely synchronized digital gain control.

Rational Acoustics and Audient announced the integration between the recently updated Smaart v9 audio and acoustical measurement software and the Audient EVO line of USB-C audio interfaces. The Smaart 9.1 update integrates the controls for phantom power and gain for Audient’s EVO devices - EVO 4, 8, and 16 - directly from within the Smaart interface. Additionally, gain tracking may be enabled to allow for automatic decibel offset recalculation for calibrated inputs.

Get the full update on audio technologies for Installation, Distributed Audio, and Multiroom, learn how the Klippel NFS was used for measuring Holoplot's X1 Matrix Array compensation algorithm capabilities, and read about the multiple technologies Improving Wireless Audio, including using Ultra-Wideband (UWB) for high-quality wireless audio streaming. Learn how to calculate RIAA parts values for phono amps, discover lesser-known tubes used for audio applications, and much more.

Schiit announced a new model in its Magni line of headphone amplifiers, called IEMagni. This one is black and gray, rather than silver and gray or black and red, like the Magni 3+ and Heresy. The new IEMagni is called that way because it has three gain modes, including negative gain for IEMs, and advanced protection, like DC sense and mute, to protect those same IEMs. It still offers 0dB and +15dB gain and it still has 2400mW RMS output into 32 ohms for hard-to-drive headphones, making it a more versatile Magni.

SHANNON BECKER: Tell us about your company Tortuga Audio. Can you also share the story behind your sea turtle mascot? MORTEN SISSENER: Tortuga Audio is a boutique audio design, manufacturing, and marketing company located in South Florida. At present we …

French company Digigram announced that its research project manager, Dr. Nicolas Sturmel, will present a paper and poster at the 135th AES Convention in New York City on Saturday, October 19, from 5:00 to 6:30 PM. The paper, “Automatic Analog …