Multi-zone audio wireless synchronous playback Bluetooth one-to-many speaker receiver amplifier

Abstract

This invention relates to a multi-zone wireless synchronous audio playback Bluetooth one-to-many audio receiver amplifier, comprising a main audio signal transmission and amplification device and multiple audio signal receiving and amplification devices. The main audio signal transmission and amplification device includes a Bluetooth receiving unit, an analog-to-digital converter, a wireless radio frequency transmitter, a first local audio input and selection unit, and a first amplification unit. The multiple audio signal receiving and amplification devices include a wireless radio frequency receiver, a digital-to-analog converter, a second local audio input and selection unit, and a second amplification unit. Therefore, this invention can provide Bluetooth one-to-many audio signal transmission with better sound quality and applicability.

Claims

1. A multi-zone audio wireless synchronous playback Bluetooth one-to-many speaker receiver amplifier, comprising: A main audio signal transmission and amplification device includes a Bluetooth receiver unit, an analog-to-digital converter unit, a radio frequency (RF) transmitter unit, a first local audio input and selection unit, and a first amplification unit. The Bluetooth receiver unit receives Bluetooth wireless audio signals output from an external device. The RF transmitter unit is electrically connected to the Bluetooth receiver unit and converts the received analog audio signals into digital signals. The RF transmitter unit is electrically connected to the RF transmitter unit and transmits the digital signals at a set frequency band. The first local audio input and selection unit receives the audio signals received by the Bluetooth receiver unit and has a first local audio interface. The first amplification unit is electrically connected to the first local audio input and selection unit, has an output terminal, amplifies the audio signals output by the first local audio input and selection unit, and outputs them from the output terminal. A plurality of audio signal receiving and amplifying devices includes a radio frequency receiving unit, a digital-to-analog conversion unit, a second local audio input and selection unit, and a second amplification unit. The radio frequency receiving unit receives wireless audio signals transmitted by the main audio signal transmission and amplification device. The digital-to-analog conversion unit is electrically connected to the radio frequency receiving unit and converts the digital signals received by the radio frequency receiving unit into analog audio signals. The second local audio input and selection unit is electrically connected to the digital-to-analog conversion unit and can input the analog audio signals output by the digital-to-analog conversion unit, and is provided with a second local audio interface. The second amplification unit is electrically connected to the second local audio input and selection unit, has an output terminal, and amplifies the audio signals output by the second local audio input and selection unit and outputs them through the output terminal.

2. The multi-zone audio wireless synchronous playback Bluetooth one-to-many audio receiver amplifier as described in claim 1, wherein the audio signal receiving and amplifying device further includes a transmission and display unit electrically connected to the digital-to-analog conversion unit, and capable of generating a display message when the digital-to-analog conversion unit has an audio signal.

3. The multi-zone audio wireless synchronous playback Bluetooth one-to-many audio receiver amplifier as described in request item 2, wherein the transmission display unit is equipped with a transmission indicator light.

4. The Bluetooth one-to-many audio receiver amplifier for multi-area wireless synchronous playback of audio as described in Request 1, wherein the transmission and reception frequency bands of the wireless radio frequency transmitting unit and the wireless radio frequency receiving unit can be selected as 5.2 GHz or 5.8 GHz.

5. The Bluetooth one-to-many audio receiver amplifier for multi-area wireless synchronous playback of audio as described in Request 1, wherein the wireless radio frequency transmitting unit and the wireless radio frequency receiving unit are manually or automatically switched to the corresponding frequency band.

6. The multi-zone audio wireless synchronous playback Bluetooth one-to-many audio receiver amplifier as described in claim 1, wherein the audio signal input from the first local audio interface has a higher priority than the audio signal input from the Bluetooth receiver unit.

7. The multi-zone audio wireless synchronous playback Bluetooth one-to-many audio receiver amplifier as described in claim 4, wherein the audio signal input from the second local audio interface has a higher priority than the audio signal input from the digital-to-analog conversion unit.

8. The multi-area audio wireless synchronous playback Bluetooth one-to-many audio receiver amplifier as described in claim 4, wherein the main audio signal transmission amplification device is provided with a first panel, and the first panel is provided with a Bluetooth input indicator, a power indicator, a 5.2G indicator, a 5.8G indicator, a switch, a first local audio interface, and a volume knob.

9. The multi-area audio wireless synchronous playback Bluetooth one-to-many audio receiver amplifier as described in claim 4, wherein the audio signal receiving and amplifying device is provided with a second panel, and the second panel is provided with a transmission indicator light, a power indicator light, a 5.2G indicator light, a 5.8G indicator light, a switch, a second local audio interface, and a volume knob.

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