Design And Development of An Affordable Multi-Channel USB Audio Inteface for Music Recording

• Main Author: Muhammad Aqmal Shah Bin Norazli
• Language: English
• Published: 2023
• Subjects: USB Audio Interface

Audio recording is crucial in distributing the art to the world. Historically, musicians and engineers use to record on a wax cylinder. Since then, the technology improving as time progress forward. From wax cylinder, to tape machine, to PCI audio card, then later the technology evolved allowing the musicians and engineers could produce music using audio interface that enable them to work with even from bedroom. Study of this area of knowledge seems new to a developing country like Malaysia which emphasize on development of other area of technology, such as communications and transportation. Designing the multi-track audio interface involving basic components comprising Preamp, Digital-to-Analog and Analog-to-Digital Converter, USB, and output for monitoring during playback and also during recording the track. It is almost impossible to develop an audio interface from scratch because of the development of the driver for the respective audio interface to be working with PC. However, products such as audio codec produced by Behringer and Texas Instrument enable the development of this project by designing the preamp circuitry. Preamp circuitry for this project is done by choosing the suitable design, using Class ‘A’ single NPN transistor to amplify the low level signal produced by musical instrument and microphones. The system is compatible with Audacity as Digital Audio Workstation in the PC to record the signal of the guitar; which is used in this experiment. Even the prototype is cheaper and simpler, it does the job as close as possible to the existing product in the market.