Weak sound receiver

Abstract

The weak sound receiver comprises weak signal receiver and playback circuit. The weak signal receiver is connected to a filtering circuit. The weak signal receiver picks up weak sound signal from external environment, and the filtering circuit does filtering processing for received sound signal. Then, signal amplification circuit amplifies sound signal and the playback circuit plays sound back.

Description

Technical field:

[0001] The invention relates to a sound receiving device, in particular to a weak sound receiver. Background technique:

[0002] In many occasions, it is necessary to collect weak sound signals. In the prior art, the collection of weak signals is mostly achieved by shortening the distance or accurate positioning to realize the collection of weak sound signals, but this method is limited by various factors. There are not many occasions for use, and the sound signal acquisition process is complicated, and the collected sound signal is noisy. Invention content:

[0003] The technical problem to be solved by the present invention is: in many occasions, it is necessary to collect weak sound signals. In the prior art, for the collection of weak signals, the collection of weak sound signals is mostly realized by shortening the distance or accurate positioning, but This method is limited by various factors, and it is not used in many occasions, and the sound sign...

Examples

Embodiment Construction

[0005] The present invention is a weak sound receiver, the weak sound receiver is composed of a weak signal receiver and a sound playback circuit, characterized in that the weak signal receiver is connected with a filter circuit, and the filter circuit The connection is provided with a signal amplification circuit, the connection of the signal amplification circuit is provided with the sound playback circuit, and the weak signal receiver extracts a weak sound signal from the external environment and transmits it to the filter circuit. The filtering circuit performs filtering processing on the received sound signal, and after the sound signal is further amplified by the signal amplification circuit, the sound is played by the sound playback circuit. Specifically, the filtering circuit adopts the mean filtering algorithm.

Technical field:

[0001] The invention relates to a sound receiving device, in particular to a weak sound receiver. Background technique:

[0002] In many occasions, it is necessary to collect weak sound signals. In the prior art, the collection of weak signals is mostly achieved by shortening the distance or accurate positioning to realize the collection of weak sound signals, but this method is limited by various factors. There are not many occasions for use, and the sound signal acquisition process is complicated, and the collected sound signal is noisy. Invention content:

[0003] The technical problem to be solved by the present invention is: in many occasions, it is necessary to collect weak sound signals. In the prior art, for the collection of weak signals, the collection of weak sound signals is mostly realized by shortening the distance or accurate positioning, but This method is limited by various factors, and it is not used in many occasions, and the sound sign...

Examples

Embodiment Construction

[0005] The present invention is a weak sound receiver, the weak sound receiver is composed of a weak signal receiver and a sound playback circuit, characterized in that the weak signal receiver is connected with a filter circuit, and the filter circuit The connection is provided with a signal amplification circuit, the connection of the signal amplification circuit is provided with the sound playback circuit, and the weak signal receiver extracts a weak sound signal from the external environment and transmits it to the filter circuit. The filtering circuit performs filtering processing on the received sound signal, and after the sound signal is further amplified by the signal amplification circuit, the sound is played by the sound playback circuit. Specifically, the filtering circuit adopts the mean filtering algorithm.