CN2283297Y - Natural sound source recording and playing device - Google Patents

Abstract

A recording and playing device with natural sound source is composed of front and back shells, base, sound processor consisting of oscillator, pulse generator, control logic circuit, external key switch, sequential generator, pulse generator and electronic selector, ROM, address generator, decoder, audio amplifier, loudspeaker, audio amplifier, and volume regulator.

Description

Natural sound source recording and playback device

The utility model relates to a music recording and playback device, in particular to a device which can store natural sound sources in a memory and play them.

The rapid development of industry and commerce, and today's heyday of science have brought great pressure, anxiety and insomnia to more people, resulting in unexplained illnesses. Music can make people's mind, psychology and body have a certain degree of adjustment and change. After being busy for a period of time, people go to foreign countries and the countryside for vacation, and listening to the sound of nature will make people happy. Therefore produced some devices that relevant natural sounds are recorded on media such as music tapes and CDs, for users to listen to. But existing product has following shortcoming:

1. Natural sounds have their own rules and specific tones, so the recording will waste a lot of memory space.

2. The selectivity is poor, usually at the end of the audio source, you must search for the desired audio source, and the immediate effect is poor.

The purpose of this utility model is to provide a natural sound source recording and playback device, which is beneficial to the regular repetition of natural sounds, so that it can store a specific sound source in a memory in a digital manner, and utilizes the divideable characteristics of the memory. Several different sound sources can be properly arranged and stored, and the characteristics of real-time selection can be achieved by controlling the processing circuit.

The secondary purpose of the utility model is to provide a natural sound source recording and playback device, which can play the sound source in a regular and coordinated sound source by utilizing its repeatable and continuous characteristics.

The purpose of this utility model is achieved in that a kind of natural sound source recording and playback device comprises a front shell, a rear shell, a base, a sound processor and a volume adjustment circuit. Among them, the sound processing circuit is connected by the oscillator to the pulse generator, and then connected to the control logic circuit, the control logic circuit is connected to the external key switch, the timing generator is connected to the pulse generator and the electronic selector, the input of the electronic selector is connected to the read-only memory, and the memory is divided into It is several storage areas, which are connected to the address generator, and the output of the electronic selector is connected to the decoder for decoding, and then passes through the filter and the current buffer, to the audio amplifier, and then to the speaker; the timing switch output of the volume adjustment circuit is connected to the audio amplifier, Its input is connected to the control logic circuit, and the front shell is provided with corresponding button holes and volume knob holes.

The sound processing circuit and the volume adjusting circuit are two separate circuit boards, which are arranged in a space composed of a front shell, a rear shell and a base.

The utility model can store the sounds of nature in the read-only memory, and store several different natural sounds through the divisible storage area. Through the repeated and continuous signal output, the natural and pleasant sound source will continue to flow out, which can soothe the listener's heart, so as to relax and relieve the tense and unhappy emotions.

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

Fig. 1 is the circuit block diagram of the utility model.

Fig. 2 is a simple schematic diagram of the sound processing circuit of the present invention.

Fig. 3 is a simple schematic diagram of the switch circuit of the present invention.

Fig. 4 is a schematic diagram of an exploded structure of the utility model.

Fig. 4 is the schematic circuit diagram of the utility model.

Please refer to FIG. 4 , which is a schematic diagram of an exploded structure of the present invention. As shown in the figure: the main body is composed of three sets of components, including a front shell 2, a rear shell 6 and a base 9. The three sets of components are respectively embedded in the grooves provided and fixed properly by screws. The overall Appearance is a sphere. Wherein, the front housing 2 is provided with seven groups of button holes 21 and a through hole, the button holes 21 are mainly provided for the buttons 31 of a button base 3, and a sound processing circuit 5 is fixed inside the front housing 2 under the button base 3 (the layout setting of its circuit board is set referring to Fig. 3), seven groups of key switches 51 that are provided with on the sound processing circuit 5 just can---corresponding aforementioned key 31, and through hole provides a volume knob 1 to set, to give volume adjustment circuit 4 (the layout setting of its circuit board is set referring to Fig. 2) set variable resistor 41 sets; The base 9 also comprises a battery chamber 91, is provided with for dry accumulator, and its power supply sound processing circuit 5 And the operation of the volume adjustment circuit 4 can also be provided with an appropriate direct current through the power regulator. A loudspeaker 7 device can be provided on the inner sound cover of the rear casing 6 for broadcasting the sound source output by the sound processing circuit 5 .

Please refer to Fig. 1, which is a circuit block diagram of the present utility model. As shown in the figure: the circuit includes the aforementioned sound processing circuit 5 and the volume adjustment circuit 4, and the utility model divides the two circuits on different circuit boards. And sound processing circuit 5 is mainly provided with read-only memory 8, and read-only memory 8 is divided into seven storage areas, and read-only memory 8 can be appropriately expanded and divided into more storage areas as required, in embodiments of the present utility model The read-only memory 8 is divided into seven storage areas for storing the sound digital information of seven different natural sound sources, such as the sound of waves, frogs, rain, running water, birds in the park and the heartbeat of babies. The external key switch 51 is appropriately judged and converted by the control logic circuit 52, wherein the control logic circuit 52 performs digital conversion on the key switches SW1-SW7 through the diodes D1-D14, and the input part of the key switch 51 is connected to the control sequence circuit 55 and the electronic selector 81, so that the address generator 56 counts and generates the address to be captured, and selects a storage area in the storage-only memory 8, and sends the data to the decoder 57 for decoding through the electronic selector 81 , then the analog signal is generated through the filter 58 and the electric charging slow mover 59, and the sound is sent to the speaker 7 through an audio amplifier 60 to send a natural sound. In the aforementioned memory signal output, because the sound is a continuous and repetitive signal, it is necessary to use the timing generator 55 to generate an appropriate cycle, and the timing of the timing generator 55 is supplied by the oscillator 54 and the generator 53 in time. , the purpose of which is to make the output of the audio source information stable and to be properly adjusted in the time period.

In the above-mentioned ROM, as shown in FIG. 5 , part A includes an address generator 56 and an electronic selector 81 , and software is contained in the memory 8 . Oscillator 54 is generated by the on and off state changes of transistors Q1 and Q2, and timing generator 53 is composed of resistors R10, R11, and capacitor C8 charging and discharging to form timing generator 55. Timing generator 55 is a CMOS circuit that can generate at least The generator of four kinds of periodic states is used as the periodic control of the sound source, and the audio amplifier 60 is a 1.5W high-power amplifying circuit, which is used to amplify the weak analog signal transmitted by the filter 58 to facilitate the loudspeaker SPK1 output. Figure 5 is an implementation circuit, in which the digital signal of the sound is stored in the memory, and then through digital/analog conversion, the natural sound source is amplified and output.

In addition, the volume adjustment circuit 4 is provided with a timing switch 43 and a transformer socket 42, which are used to control the opening and closing of the natural sound source and the intermittent adjustment of the sound source.

Claims (2)

1, a kind of natural source of sound recording/displaying device, comprise front casing, rear casing, a base and a Sound Processor Unit and a volume are adjusted circuit, it is characterized in that: sound treatment circuit connects pulse producer by oscillator, connect control logic circuit again, control logic circuit connects the external key switch, clock generator connects pulse producer and electronic selector, the input of electronic selector connects ROM (read-only memory), and storer is divided into several memory blocks, and it connects the address generator, the output of electronic selector connects decoder decode, through wave filter and current buffer,, arrive loudspeaker more again to note amplifier; The sequence switch output that volume is adjusted circuit connects note amplifier, and its input connects control logic circuit, and front casing is provided with corresponding key hole and volume knob hole.

2, natural source of sound recording/displaying device according to claim 1 is characterized in that: it is two circuit boards that set up separately that sound treatment circuit and volume are adjusted circuit, and it is located at a front casing, rear casing and base and forms in the space.

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