A high capacity data recording device based on a digital audio processor and a video cassette recorder

Area of Science:

• Electrical Engineering
• Digital Signal Processing
• Audio Technology

Background:

• Traditional audio recording methods face limitations in storage capacity and fidelity.
• The need for high-capacity, high-fidelity digital audio storage is growing.

Purpose of the Study:

• To develop a novel high-capacity digital audio recording system.
• To leverage existing video cassette technology for audio data storage.

Main Methods:

• Integration of a modified digital audio processor with a video cassette recorder.
• Conversion of two analog audio channels to digital format at a 44-kHz sampling rate.
• Utilizing a standard video cassette for digital data storage, achieving 2 Gbytes capacity.

Main Results:

• The system records two audio channels with bandwidth up to 20 kHz and a dynamic range near 90 dB.
• A 3-hour video cassette provides a storage capacity of 2 Gbytes.
• Data retrieval is possible in both analog and digital formats.

Conclusions:

• The developed system offers a high-capacity and cost-effective solution for digital audio recording.
• This approach demonstrates the potential of repurposing video technology for advanced audio applications.