Audio Signal Processing System for Mixer Sound Check
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Solution Overview
Problem
Conventional digital mixers face challenges in efficiently performing sound checks due to complex connection settings between recorders and channels, leading to time-consuming and error-prone operations, and inefficient memory usage during sample sound recording.
Innovation Solution
An audio signal processing system with a record instructor, reproduction instructor, channel selector, recorder, and reproducer that allows for rapid, accurate, and easy sound check operations by recording and reproducing audio signals with relation information, enabling efficient memory usage by distributing memory capacity only to necessary channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an external recorder is used to record and reproduce sounds for sound check, then the system has diversity of configuration, but there is a lot of trouble with connection between the mixer and the recorder and connection between the track and the channel with the possibility of improper connection
Solution Approach 1:
The patent combines the recorder and mixer into a single integrated device, merging the recording function and mixing function into one system. This eliminates the need for separate connection settings between external devices, as the recorder is now internally connected to the mixer channels. The integration resolves the connection complexity while maintaining configuration flexibility through software-based channel assignment.
Solution Approach 2:
The integrated recorder-mixer system provides multi-functionality by combining recording, playback, and mixing capabilities in one device. The recorder can serve multiple channels simultaneously, and the same device performs both recording and mixing functions that previously required separate equipment. This universal approach simplifies operations while maintaining adaptability.
2Ease of operation
If an internal recorder is provided for each channel to record and reproduce sounds, then connection work is not required, but the apparatus has a predetermined capacity of memory area for each channel in a fixed manner, resulting in poor use efficiency of memory
Solution Approach 1:
The patent implements dynamic memory allocation where the recorder can flexibly assign recording capacity to different channels based on actual needs. Instead of fixed predetermined memory for each channel, the system dynamically distributes memory resources, allowing channels to use more or less memory as required. This dynamic approach eliminates wasted memory while maintaining ease of operation through automated management.
Solution Approach 2:
The system changes the parameter of memory allocation from fixed to variable. Each channel's memory capacity is no longer predetermined but can be adjusted according to the recording requirements. This parameter change allows efficient memory utilization while keeping the operation simple, as the system automatically manages the variable allocation based on channel selection and recording duration.
3Manufacturing precision
If parameter values are adjusted for each microphone and instrument of all channels during sound check, then the parameter values can be set according to environment, but it takes a lot of trouble and requires enough time for rehearsal
Solution Approach 1:
The system performs preliminary recording of sounds during rehearsal, capturing the actual performance data. This preliminary action allows the sounds to be stored and reused for sound check purposes, eliminating the need for time-consuming manual parameter adjustment during the actual sound check. The preliminary recording preserves the environmental conditions and performance characteristics for later analysis and adjustment.
Solution Approach 2:
The patent uses copying by recording sounds during rehearsal and reproducing them during sound check. Instead of requiring live adjustment of each channel during sound check, the system copies the rehearsal sounds into the recorder, then plays them back for parameter adjustment. This copying approach maintains the precision of parameter adjustment while significantly reducing the time required, as the same sounds can be reviewed and adjusted without requiring players and staff to be available.
Data Source
AI summary
An audio signal processing system for recording a sound inputted into a channel of a mixer which receives a plurality of audio signals, processes the audio signals in a plurality of channels and outputs the processed signals, and reproducing the recorded audio signal for adjusting parameters of the mixer is provided. The audio signal processing system records, when record is instructed a channel is selected, an audio signal inputted to the selected channel with relation information indicating the selected channel, and reproduces, when reproduction is instructed and a channel is selected, an audio signal which has been stored with relation information indicating the selected channel.