Dual Memory Audio Crossfading Power Management
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Solution Overview
Problem
Ultra-portable electronic devices with limited resources struggle to perform audio processing operations like crossfading between songs due to insufficient memory and power constraints, lacking the ability to seamlessly transition between audio streams.
Innovation Solution
The implementation of a dual-memory system where a fast but expensive static RAM (SRAM) handles primary audio processing, and a less expensive but power-hungry DDR SDRAM is activated only when needed for memory-intensive operations, such as crossfading, allowing the device to conserve power by powering off the second memory after the operation is completed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single memory is used in ultra-portable devices, then power consumption is reduced and device simplicity is maintained, but the device cannot perform memory-intensive audio operations like crossfading
Solution Approach 1:
The patent implements a dynamic memory architecture where a second memory is selectively activated only when audio processing operations require additional memory resources. The system transitions between single-memory and dual-memory modes based on operational needs, allowing the device to perform memory-intensive tasks like crossfading while consuming minimal power during normal operation.
Solution Approach 2:
The second memory serves multiple functions: it provides additional storage capacity for audio processing operations, enables crossfading capabilities, and can be deactivated when not needed. This multi-functional approach allows a single component to address multiple system requirements without permanently increasing power consumption.
2Quantity of substance
If a second memory is activated for audio processing operations, then memory capacity is increased enabling crossfading, but power consumption increases
Solution Approach 1:
The second memory is activated periodically or on-demand based on the specific audio processing requirements. During normal single-audio playback, the second memory remains deactivated. When crossfading or other memory-intensive operations are detected, the system activates the second memory, performs the operation, then deactivates it again, creating a periodic activation pattern that balances capacity needs with power consumption.
3Adaptability or versatility
If hardware resources are reduced in ultra-portable devices, then power consumption and device size are reduced, but the device lacks memory-utilizing functionalities like crossfading
Solution Approach 1:
The memory system is segmented into a first memory for basic operations and a second memory for advanced audio processing. This segmentation allows the system to allocate resources efficiently, using only the necessary memory capacity for each specific task rather than requiring all memory resources to be permanently available, thus reducing overall hardware complexity while maintaining functionality.
Data Source
AI summary
Systems, methods, and devices are provided for performing audio processing operations, such as crossfading between two audio streams, by storing information on multiple memories. In one example, such a method may include storing a first portion of information associated with an audio processing operation on a first memory. A second memory may be activated, upon which a second portion of the information associated with the audio processing operation may be stored. The audio processing operation may be performed using a processor with the information stored on the first memory and the second memory. When the audio processing operation has completed, the second memory may be deactivated.