Audio Processing Circuit With Bypass Path and Dynamic EQ Bands
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Solution Overview
Problem
Conventional multiband compressor circuits split and recombine sound signals, leading to audible quality loss due to complete signal processing and recombination.
Innovation Solution
A circuit with a primary path as a bypass line and secondary paths equipped with equalizing filters and dynamic circuits for adjustable frequency, amplitude, and phase processing, allowing for fine signal corrections and improved sound quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the amplified input signal is completely split by filters and processed separately in conventional multiband compressors, then frequency range processing is achieved, but signal quality is degraded due to splitting and recombination
Solution Approach 1:
The circuit divides the signal processing into two distinct paths: a primary path that processes the entire frequency range with minimal intervention, and secondary paths that handle specific frequency ranges with dynamic processing. This segmentation allows quality preservation in the primary path while enabling targeted processing in secondary paths, resolving the contradiction between signal quality and processing capability.
Solution Approach 2:
Instead of completely splitting and processing all signal components through dynamic circuits, the invention applies dynamic processing only to specific frequency ranges through secondary paths. The primary path carries the majority of the signal unchanged, applying partial processing only where needed, thus preserving overall signal quality while maintaining processing effectiveness.
2Measurement precision
If dynamic circuits are integrated with equalizing filters, then fine signal corrections are achieved, but circuit complexity increases
Solution Approach 1:
The invention merges dynamic circuits with equalizing filters into integrated units that can be selectively applied in secondary paths. This combination allows precise signal corrections by coordinating frequency selection (equalizing filter) with dynamic parameter adjustment (dynamic circuit) in a unified structure, achieving fine correction precision while managing circuit complexity through modular integration.
3Adaptability or versatility
If multiple equalizing filters with dynamic circuits are used in parallel or series, then processing versatility is improved, but device complexity increases
Solution Approach 1:
The invention employs multiple equalizing filters with dynamic circuits that can be selectively activated and configured in different arrangements (parallel or series) based on processing requirements. This dynamic configurability provides versatile processing options for different signal conditions while managing complexity through selective deployment rather than permanent fixed structures.
Data Source
AI summary
A circuit for processing sound signals includes an input amplifier for amplifying an input signal, wherein the amplified input signal is supplied to an output amplifier unchanged via a primary path configured as a bypass line and processed via one or several secondary paths configured as a circuit for processing the amplified input signal for amplifying and outputting the processed signal, wherein respective signal portions of the amplified input signal, which are supplied to the output amplifier via the primary path and the secondary path(s), can each be adjusted with an adjusting device, and wherein the secondary path includes a corresponding equalizing filter for filtering a corresponding frequency range with a dynamic circuit for optionally dynamically changing frequency, amplitude and phase depending on the signal and concurrent with a static control.