Latest Audio Articles and Videos

Bob Yannes built a three-voice analog synthesizer onto one die in 1982, and its imperfect filter became the signature…

Bob Yannes built a three-voice analog synthesizer onto one die in 1982, and its imperfect filter became the signature sound of an era.

This project brief describes how to build a compact dual-channel power amplifier module that delivers 38 W per channel…

This project brief describes how to build a compact dual-channel power amplifier module that delivers 38 W per channel into 4-ohm speakers using STMicroelectronics' STA540 audio amplifier IC.

Explore how frequency-modulated waves resist interference. We break down the demodulator architecture and derive the…

Explore how frequency-modulated waves resist interference. We break down the demodulator architecture and derive the exact output signal power for a sinusoidal message.

The new SECORA ID Key S USB security solution supports FIDO2 and PKI through hardware and near field interfaces.

The new SECORA ID Key S USB security solution supports FIDO2 and PKI through hardware and near field interfaces.

Envelope detection is simple, but that simplicity has a noise-performance cost. Here’s how much SNR conventional AM…

Envelope detection is simple, but that simplicity has a noise-performance cost. Here’s how much SNR conventional AM gives up compared to its coherent counterparts.

Signetics packed a VCO and phase detector into one 14-pin part, turning a daunting feedback technique into something an…

Signetics packed a VCO and phase detector into one 14-pin part, turning a daunting feedback technique into something an ordinary engineer could build.

5G, AI, and quantum computing are pushing RF interconnects to their limits. Learn how engineers are evolving connector…

5G, AI, and quantum computing are pushing RF interconnects to their limits. Learn how engineers are evolving connector designs to ensure signal integrity in compact, high-speed systems.

Build an ultra-low-noise preamplifier with a JFE150 JFET and OPA202 op-amp, perfect for high-impedance sensors,…

Build an ultra-low-noise preamplifier with a JFE150 JFET and OPA202 op-amp, perfect for high-impedance sensors, hydrophones, guitar pickups, microphones, and turntables.

Using a graphical approach, we show that coherent SSB demodulation leaves the input and output SNR unchanged, then…

Using a graphical approach, we show that coherent SSB demodulation leaves the input and output SNR unchanged, then compare its noise performance to DSB-SC and baseband systems.

Analog Devices EVAL-ADMX6001 Evaluation Board (ADMX6001-EBZ) is a high-performance reference platform for evaluating…

Analog Devices EVAL-ADMX6001 Evaluation Board (ADMX6001-EBZ) is a high-performance reference platform for evaluating ultra-wideband, low-noise data acquisition systems. Watch and learn all about their features, specs, applications, and more!

Visualizing how correlated and uncorrelated signals combine offers an intuitive look at power transformation. See how…

Visualizing how correlated and uncorrelated signals combine offers an intuitive look at power transformation. See how this difference boosts baseband power to double the output SNR.

Learn how to build a constant-bandwidth band-pass filter covering 20 kHz to 60 kHz, with an integrated frequency counter…

Learn how to build a constant-bandwidth band-pass filter covering 20 kHz to 60 kHz, with an integrated frequency counter for precise tuning.

Cirrus Logic introduced nine new 32-bit ADCs, DACs, and codecs for pro and prosumer audio systems with 115 dB dynamic range.

Cirrus Logic introduced nine new 32-bit ADCs, DACs, and codecs for pro and prosumer audio systems with 115 dB dynamic range.

In this article, we'll learn how to calculate the noise power and signal-to-noise ratio (SNR) of a double-sideband…

In this article, we'll learn how to calculate the noise power and signal-to-noise ratio (SNR) of a double-sideband suppressed-carrier communication system.

Created by Philips and Mullard in 1963, the BC109 was the low-noise member of a transistor family that dominated European…

Created by Philips and Mullard in 1963, the BC109 was the low-noise member of a transistor family that dominated European electronics for two decades and later became a sought-after component in guitar effects.

This project brief explains how to construct a PCB-based audio-processing platform with an ATmega328 microcontroller. A…

This project brief explains how to construct a PCB-based audio-processing platform with an ATmega328 microcontroller. A link to Arduino code for creating an audio echo is also provided.

New audio releases use spatial audio, MEMS, and hybrid designs to improve immersion and sound quality.

New audio releases use spatial audio, MEMS, and hybrid designs to improve immersion and sound quality.

In this article, we'll learn about several key applications of PLLs in communication systems, including tracking filters,…

In this article, we'll learn about several key applications of PLLs in communication systems, including tracking filters, frequency and phase modulation, and FM and AM demodulation.

Developed in the mid-1970s, National Semi’s LM386 collapsed a complete audio output stage into a single DIP-8 package…

Developed in the mid-1970s, National Semi’s LM386 collapsed a complete audio output stage into a single DIP-8 package running off a 9-V battery—and it became the first amplifier most hobbyists ever built.