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Voice recorder solution
With the enrichment of audio-visual home appliances, more and more miniaturized products have entered daily life, the most prominent of which is the digital recorder, which is a new digital product that is gradually replacing tape recorders and interview machines. And become the hottest f-I portable recording equipment. Its volume is small and exquisite, very thin, and weight is very light, and what it brings is convenience to people, and adds endless fun. As a simple and convenient tool for obtaining and recording digitized sound files, it has entered the market since 2000 and has become the first choice for students, journalists and business people to purchase recording equipment. Not only has it replaced the repeater on campus, but it has also become the new favorite of on-the-job learners who are short on time. The digital voice recorder with FM function can also conveniently listen to radio foreign language teaching programs.
1. The structure of the recording pen
The compact and avant-garde shape of the digital voice recorder is an important factor to attract consumers. Due to the adoption of a new recording system and memory storage media, the mechanical structure is completely abandoned, and it can really be as light and small as a pen, and its volume is only ordinary 1/2 of the interview machine, 1/6 of the Walkman, you can use it easily by putting it in your pocket or pinning it in your jacket pocket. In fact, it is a recording device that uses digital recording technology. It collects, compresses, and stores in flash memory (FlashMemory) for recording, without using additional recording tapes, microphones, and other equipment. The sound quality is clear and lifelike, and there is no loss in sound quality even if it is played repeatedly.
2. Types of recording pen solutions
1. Simple type: the recording time is more than 2 hours 2~; it has an audio interface and a memory of 8 MB; it can record music in 19 and 9 segments in 2 files; it has basic functions such as automatic power off and key lock.
2. Luxury type: the recording time is 5-20 hours; it has an audio interface and a memory of 16-32 MB; it can record 396 pieces of music in 4 files, and some products have FM radio function.
3. Multi-function type: recording time is 10-18 hours, adopts USB interface, memory 16-32 MB; can record 495 pieces of music in 5 files, equipped with automatic recording and timing recording functions.
4. Composite type; in addition to the general recording function, it can also shoot and store 60~250 digital photos~98 See dynamic images. At present, the best-selling products are concentrated in a few imported brands such as K&C, JNC, SU M S U N G and Toshiba made in Korea; from the second half of 2001, domestic brands began to enter the market, such as Sunny, E A S T and other brands. Low, won the favor of many consumers.
3. Advantages of the digital recorder solution
The digital voice recorder is rich in content and more attractive, and the length of continuous recording time is what users pay most attention to. The traditional interview machine depends on the length of the tape. A current tape can record continuously for 0.5-1 hour, and must be turned over in the middle. The continuous recording time of the digital voice recorder is as high as 10 to 15 hours, more than ten times longer than that of an ordinary tape, and the recorded voice can be segmented and marked, which is very convenient for playback; the sound quality is clear It is also its distinctive feature. Because the voice is optimized in terms of compression algorithm and the digital storage method is adopted, the recording effect is generally much better than that of the tape recorder, and there is no loss of sound quality for repeated playback; in addition, the energy consumption is very low. AAA batteries can be used continuously for more than 10 hours, while ordinary tape recorders need more than 2 AAA or AAA batteries, but they can only be used continuously for 3 to 4 hours. It can be conveniently connected to various audio sources for direct recording, and can also be used for telephone recording through telephone lines, and the recording data can be transmitted to computers and networks for other various forms of applications.
4. Features of the recorder
1. Good sound quality: Because of the use of digital technology, the sound quality is close to the original sound, and it can be stored for a long time and played repeatedly without loss of signal.
2. Long recording time: Generally, it can record for 5~8 hours, and use two AA batteries to work for 10 hours and record for 8 hours; some new products can also record for 24 hours.
3. Easy information retrieval: divided into multiple files, each file can store up to 1130 pieces of information, which can be easily retrieved and deleted in sections.
4. More functions: Extensive use of high-tech design brings a lot of convenience to users. It has an automatic stop function, which can make the machine stop recording automatically in a silent environment, without consuming battery and storage space. It will automatically start when there is sound, avoiding the need for users to Turn on or off by hand; it can automatically display the remaining power, recording time, and the number of messages, and some products also have a luminous display function. To meet the needs of users in special occasions; the telephone recording function can record telephone conversations by receiving ordinary telephones. 5. Can be connected to a computer: with a USB interface, the recorded sound files can be edited and permanently stored in the computer hard disk, and can also be freely disseminated through the network, sent to other users by E-mail, and can also be shared with others through the LAN.
6. The appearance is more fashionable: the streamlined appearance is stylish, small and exquisite, full of personality; the weight is only 38-60 g, and there are various colors such as fluorescent silver and sea blue. The whole product is dynamic and fashionable, and has a modern appreciation taste.
7. Main accessories: generally include built-in and external microphones and digital recorders with input lines, and output with built-in speakers, earphones, and output lines.
8. Main disadvantages: currently only batteries can be used, and external power supply cannot be used; some products are slightly expensive; when recording in LP compression mode with a longer recording time, there is a slight noise.
5. Suggestions on the purchase of brands of recording pens
Although the appearance of the digital voice recorder is fashionable and small, in addition to the beautiful appearance, you also need to pay attention to its internal functions when purchasing a digital voice recorder, which should be evaluated from the following four aspects.
1. recording function
The first thing to pay attention to is the recording time, which is related to the supported sound file storage specifications. Currently, there are LP, SP, and H Q-types. Take the recording of lhour as an example, the file of L P lf~ type occupies 1.9 4 MB of memory, SP occupies 3.8 9 MB, and H Q is relatively larger. A recorder with 32MB internal memory, the recording time of IJP format is as long as 1140 min, that of SP format is 710 min, and that of HQ format is 140 min. Many digital voice recorders are compatible with S P and L P P~j formats, and some high-end products support H Q format.
The automatic stop recording (V 0 R) function is also very important, that is, it will automatically stop when there is no sound, and start the recording function when there is sound, which can prevent unnecessary recording and fully ensure the effective use of its storage space. With this function.
2. recording effect
Recording quality is a very important technical indicator, and its sound quality is generally better than that of traditional tape recorders, but there are still some differences between various products, so it is best to try it out when buying: first record a piece of sound, and then listen to the sound quality Whether there is noise, it is true to hear it.
3. playback function
After recording for a long time, you still have to listen to it again, and you need to search at a high speed, and you have to check whether it provides interval repeat playback. At present, most mainstream factory products have these functions. Wearing headphones to review live conversation recordings is very uncomfortable. Some recording pen speakers can be directly listened to, and the effect can be accurately felt.
4. Additional features
The digital voice recorder will also have some auxiliary functions, which consumers should also pay attention to. Such as alarm, voice control, telephone recording, MP3 playback, FM FM radio, computer editing, mobile storage, etc. The more additional functions, the more expensive the price, you should choose according to your actual situation.
The above are the details of the recording pen solution introduced by Shenzhen Zuchuang Microelectronics Co., Ltd. for you. If you have the electronic function development needs of a digital voice recorder, you can rest assured to entrust it to us. We have rich experience in customized development of electronic products, and can evaluate the development cycle and IC price as soon as possible, and can also calculate the PCBA quotation. We are a number of chip agents at home and abroad, including MCU, voice IC, Bluetooth IC and modules, wifi modules. Our development capabilities cover PCB design, single-chip microcomputer development, software custom development, APP custom development, WeChat official account development and other hardware and software design. It can also undertake the research and development of smart electronic products, household appliances scheme design, beauty equipment development, Internet of Things application development, smart home scheme design, TWS scheme development, Bluetooth audio development, children's toy scheme development, and electronic education product development.
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