20240056045. Amplifier Power Attenuator and Closed Loop Operation simplified abstract (D'Amore Engineering, LLC)
Contents
Amplifier Power Attenuator and Closed Loop Operation
Organization Name
Inventor(s)
Anthony T. D'amore of Camarillo CA (US)
Juan Rodriguez of Mesa AZ (US)
Amplifier Power Attenuator and Closed Loop Operation - A simplified explanation of the abstract
This abstract first appeared for US patent application 20240056045 titled 'Amplifier Power Attenuator and Closed Loop Operation
Simplified Explanation
The abstract describes an amplifier power attenuator that uses an amplified audio feedback signal from an audio amplifier, along with a user-set impedance and a maximum voltage set-point, to attenuate an audio signal before amplification. This prevents damage to the loudspeaker. The attenuation is adjusted by changing the impedance of a variable impedance optocoupler based on the error between the feedback signal voltage level and the maximum voltage set-point. The counter value representing the error is assessed against target values associated with predetermined attenuation levels to determine the appropriate attenuation to be applied to the audio signal.
- The amplifier power attenuator utilizes an amplified audio feedback signal to attenuate an audio signal before amplification.
- A variable impedance optocoupler is used to adjust the attenuation of the audio signal.
- The attenuation is determined based on the error between the feedback signal voltage level and the maximum voltage set-point.
- The counter value representing the error is assessed against target values associated with predetermined attenuation levels to identify the appropriate attenuation level.
Potential Applications:
- This technology can be used in audio amplification systems to protect loudspeakers from damage.
- It can be applied in professional audio equipment, such as amplifiers used in concert venues or recording studios.
- It can also be used in consumer audio devices, such as home theater systems or stereo amplifiers.
Problems Solved:
- The amplifier power attenuator prevents damage to loudspeakers by attenuating the audio signal before amplification.
- It addresses the issue of excessive voltage levels that can cause distortion or damage to the loudspeaker.
Benefits:
- Protects loudspeakers from damage by preventing excessive voltage levels.
- Allows users to set the desired impedance and maximum voltage set-point for optimal performance.
- Provides a range of predetermined attenuation levels to accommodate different audio setups and preferences.
- Offers a reliable and efficient solution for audio amplification systems.
Original Abstract Submitted
an amplifier power attenuator utilizes an amplified audio feedback signal from an audio amplifier (which is driving a loudspeaker), along with a user-set impedance and a maximum voltage set-point reflective of the operational parameters of the loudspeaker, to attenuate an audio signal prior to amplification thereby preventing damage to the loudspeaker. the impedance of a variable impedance optocoupler is changed to adjust the attenuation of the audio signal to one of a plurality of predetermined attenuation levels responsive to an error between a voltage level of the feedback signal and the maximum voltage set-point. the error is reflected in a counter value having a linear or non-linear relationship with the error dependent upon a magnitude of the error; the counter value is assessed against a plurality of target values associated with respective ones of the predetermined attenuation levels to identify the attenuation to be applied to the audio signal.
