CN201166985Y

CN201166985Y - Card-insertion sound-recording mike

Info

Publication number: CN201166985Y
Application number: CNU200820045375XU
Authority: CN
Inventors: 梁韵婷
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-03-25
Filing date: 2008-03-25
Publication date: 2008-12-17
Anticipated expiration: 2018-03-25

Abstract

The utility model discloses a plug-in card recording microphone, which comprises a microphone pick-up circuit, an A/D conversion recording circuit, a control circuit, a power supply circuit and a storage circuit; the microphone pick-up circuit is connected with the A/D conversion recording circuit for receiving environmental audio signals, and transmits the environmental audio signals to the A/D conversion recording circuit; the A/D conversion recording circuit is respectively connected with the control circuit and the power supply circuit, and outputs and stores recording digital signals converted in the storage circuit; the power supply circuit supplies power for the A/D conversion recording circuit; and the control circuit is used for controlling the work of the A/D conversion recording circuit. The recording record can be carried out to the sound signals of a meeting speaker after being converted from analog signals into the digital signals according to the demands of daily minutes, and the recording digital signals are stored in a corresponding memory card in a WAN document format; and the recording microphone circuit has the advantages that the volume is small, the whole appearance of the meeting microphone can not be influenced, and the use is simple and convenient.

Description

A kind of plug-in card recording microphone

Technical field

The utility model relates to a kind of plug-in card recording microphone.

Background technology

In daily life, often meet some momentous conferences, need record as the situation of file maintenance, arrangement.The normal equipment such as tape, recording pen that adopt are recorded, because sound pick-up outfit is far away from speaker's distance, and recording is subjected to the interference of impurity sound on every side easily, so effect is not fine, and it is also convenient inadequately to use.

Summary of the invention

It is a kind of easy to use that the purpose of this utility model is to provide, the digital plug-in card recording microphone of being convenient to exchange.

For realizing above purpose, the utility model has been taked following technical scheme: a kind of plug-in card recording microphone, include the microphone pickup circuit, and A/D changes recording circuit, control circuit, power circuit, memory circuit; Described microphone pickup circuit is connected with described A/D conversion recording circuit, is used to accept the external audio signal, and it is passed to A/D conversion recording circuit; Described A/D conversion recording circuit, it is connected with control circuit, power circuit respectively, and the output of the recording digital signal that will change is stored in the memory circuit, and this power circuit is that A/D changes recording circuit and powers; Control circuit, it is used to control the work of A/D conversion recording circuit.

Because talker and microphone is nearest, thereby will record, memory circuit is integrated into conference microphone inside, can directly from microphone, take out desired signal, the mode that adopts recording pickup and microphone pickup to unite two into one, directly from the microphone pickup device, obtain recorded audio signals, avoided influence of environmental noise, guaranteed the effect of recording effectively, undoubtedly quality can be higher than common sound pick-up outfit.The utility model has finished that by audio analog signals being converted to the A/D change-over circuit principle of digital signal audio frequency is converted into electric signal, and exports the audio format that can play.

Described memory circuit is arranged in the storage card, and this storage card is connected with the recording microphone plug.Adopt the design of card insert type, as: storage cards such as SD, XD, CF, not only allow microphone seem succinctly attractive in appearance, more greatly facilitate duplicating, put in order and exchanging of recording material.

Described A/D conversion recording circuit is stored in the storage card from the recording digital signal of the external audio conversion of signals gained form with WAV.The WAV form is common a kind of voice playing form, and not only convenient broadcast on computers can also be play in MP3 or digital camera.

The utility model possesses following advantage with respect to prior art: increased the recording memory circuit on the basis of common conference microphone, greatly facilitated the collection and the preservation of session recording data; Adopt the design of card insert type, it is general that the storage card of various digital products is able to, and card internal information input computer can be duplicated, exchanges, for Data acquisition,, exchange great convenience is provided; The innovative design of adopting recording acoustic pickup and microphone pickup device to unite two into one has guaranteed the effect of actual recording in high quality.Needs according to the daily meeting record; meeting spokesman's voice signal can be carried out sound recordings by the analog signal conversion digital signal; and the digital signal of will recording is stored in (as: SD, CF card etc.) on the corresponding storage card with the wav file form; the utility model circuit volume is little; do not influence the overall appearance of conference microphone; easy to use, be particularly suitable for present information interchange technology, recording effect is first-class.

Description of drawings

Fig. 1 is the utility model system chart;

Fig. 2 is the utility model embodiment storage card synoptic diagram;

Fig. 3 is the utility model embodiment control circuit structural representation

Embodiment

Below in conjunction with the drawings and specific embodiments content of the present utility model is described in further details.

Embodiment one

See also shown in Figure 1ly, a kind of plug-in card recording microphone includes the microphone pickup circuit, and A/D changes recording circuit, control circuit, power circuit, memory circuit; The microphone pickup circuit is connected with A/D conversion recording circuit, is used to accept the external audio signal, and it is passed to A/D conversion recording circuit; A/D changes recording circuit, and it is connected with control circuit, power circuit respectively, and the recording digital signal that will change output is stored in the memory circuit, and this power circuit is the power supply of A/D conversion recording circuit; Control circuit, it is used to control the work of A/D conversion recording circuit.

Memory circuit is arranged in the storage card, and this storage card is connected with the recording microphone plug.Adopt the SD card in the present embodiment.A/D conversion recording circuit is stored in the storage card from the recording digital signal of the external audio conversion of signals gained form with WAV.Store the storage card of session recording signal, this example is that miniSD card (being the mobile phone card) can insert easily in the digital equipments such as mobile phone, digital camera, digital mobile companion and computer and duplicates, resets, puts in order, exchanges and preserve, extremely easy to use, improve the arrangement of session recording record material greatly and preserved efficient.

Fig. 2 is a present embodiment storage card synoptic diagram, Fig. 3 is a present embodiment control circuit structural representation, this SD storage card has a plurality of pins, the pin of the voice plate interface in the equal corresponding diagram 3 of its each pin, thus guarantee that the circuit signal of changing can store in the SD storage card from control circuit.

Above-listed detailed description is at the specifying of the utility model possible embodiments, and this embodiment is not in order to limiting claim of the present utility model, does not allly break away from the equivalence that the utility model does and implements or change, all should be contained in the claim of this case.

Claims

1, a kind of plug-in card recording microphone is characterized in that: include the microphone pickup circuit, A/D changes recording circuit, control circuit, power circuit, memory circuit;

Described microphone pickup circuit is connected with described A/D conversion recording circuit, is used to accept the external audio signal, and it is passed to A/D conversion recording circuit;

Described A/D conversion recording circuit, it is connected with control circuit, power circuit respectively, and the output of the recording digital signal that will change is stored in the memory circuit, and this power circuit is that A/D changes recording circuit and powers;

Described control circuit, it is used to control the work of A/D conversion recording circuit.

2, plug-in card recording microphone according to claim 1, it is characterized in that: described memory circuit is arranged in the storage card, and this storage card is connected with the recording microphone plug.

3, plug-in card recording microphone according to claim 1 and 2 is characterized in that: described A/D conversion recording circuit is stored in the storage card from the recording digital signal of the external audio conversion of signals gained form with WAV.