Digital voice recorder, also known as Stick or digital recorder digital voice recorder, a digital recording device, in order to facilitate operation and enhance the recording quality is not the simple shape of pen-based, easy to carry, also has multiple functions, such as the Laser Pointer function, FM FM, MP3 players and so on. Compared with traditional tape recorders, digital voice recorder is a digital storage to record audio. Work Digital voice recorder by sampling the analog signal, encoding the analog signal into digital signal through the DAC, and to a certain degree of compression for storage. The digital signal even after multiple copies of information would not be loss of sound, intact unchanged.
Digital voice recorder purchase should note the following aspects: Recording Time Because recording equipment, the length of recording time digital voice recorder is of the most important technical indicators. Between different products based on flash memory capacity, the different compression algorithm, the length of recording time, there are also great differences. Currently 1G memory digital voice recorder recording storage time in 20-272 hours, the battery is generally a continuous working time is about 2-26 hours to meet the needs of most people. But it must be that if a long recording time is due to its high compression ratio through the use of the access to it, often affect the quality of recording. Battery Time In general, most of the digital voice recorder is a 7-AAA batteries, and some products are used small button batteries, and rechargeable battery products are built. The advantage of using ordinary batteries can be replaced, use rechargeable batteries are cheaper. Should be used to select those cells over time in the 20 hours of digital voice recorder, of course, the longer the better. Sound effects Recording Mode The sound quality digital voice recorder is usually more effective than the traditional tape recorder is better. Recording pen is usually marked with SP, LP recording mode, etc., SP said ShortPlay the short mode, this way the compression ratio is not high, the sound quality is better, but the recording time is short. The LP said LongPlay, the long mode, compression rate, there will be some reduction in sound quality. Between different products must have some differences, so you had better buy digital voice recorder recorded a live sound, and then carefully listen to the sound quality if the noise. Gotta say imported brands such as SONY, SANYO, domestic patriot, Heng Site, the Beijing's quality would be better. Sound file storage mode The length of recording time and voice recorder stores audio files supported by the relevant specifications, the current common are LP (long time recording), SP (standard recording), HQ (high quality recording) three basic models. In addition to these three models, there is a SHQ (super high-fidelity sound recording) mode, but this model has very little digital voice recorder. The standard recording time is the recording pen in the SP mode recording time to the maximum memory support. LP (LongPlay) that for a long time recording, compression rate, sound quality by sacrificing some circumstances extend down the length of recording, and generally extend the length of time the recording about 80%. That is to reduce the cost of audio quality, so there will be some reduction in sound quality. SP (Standard play) the standard recording time, this approach is not high compression rate, better sound quality, recording time is moderate. HQ (High quilty) high quality recording. This recording method is very low compression rate, sound quality is very good, but the capacity is relatively large, generally used for high demand situations, such as an important speech for the type of records archived Storage Random or built-in memory, digital voice recorder is an analog recording, with built-in flash memory to store audio information. Flash memory is characterized by power, save in the above information is not lost, in theory, can withstand repeated millions of times on the rewritable (ordinary users who can not go to a few too), so repeated use of the cost is zero. Flash memory digital voice recorder can be said to be the most expensive components, of course, greater capacity, the price is more expensive, but the longer recording time. From the current situation, the built-in 512M flash memory can store about 136 hours recording information, the built-in 1GB flash memory can store about 272 hours recording information. Now in addition to built-in memory products, some digital voice recorder will provide an external memory card such as CF, SM, etc.; disadvantage is that once this external card quality is not good, or bad finger a long time, prone to data errors; but also facilitate the exchange and sharing audio content and data transfer, can also use the card reader to record data quickly into the computer. Digital voice recorder has been able to do light and small, but also because it uses flash memory as a random memory. In the digital voice recorder just born, flash memory is also a relatively rare stuff, prices are also expensive. Today, Flash has been widely, a large number of applications, all of its familiarity has been greatly improved, prices dropped dramatically than ever before. Therefore, the price of digital recording pen down a lot.
Digital voice recorder purchase should note the following aspects: Recording Time Because recording equipment, the length of recording time digital voice recorder is of the most important technical indicators. Between different products based on flash memory capacity, the different compression algorithm, the length of recording time, there are also great differences. Currently 1G memory digital voice recorder recording storage time in 20-272 hours, the battery is generally a continuous working time is about 2-26 hours to meet the needs of most people. But it must be that if a long recording time is due to its high compression ratio through the use of the access to it, often affect the quality of recording. Battery Time In general, most of the digital voice recorder is a 7-AAA batteries, and some products are used small button batteries, and rechargeable battery products are built. The advantage of using ordinary batteries can be replaced, use rechargeable batteries are cheaper. Should be used to select those cells over time in the 20 hours of digital voice recorder, of course, the longer the better. Sound effects Recording Mode The sound quality digital voice recorder is usually more effective than the traditional tape recorder is better. Recording pen is usually marked with SP, LP recording mode, etc., SP said ShortPlay the short mode, this way the compression ratio is not high, the sound quality is better, but the recording time is short. The LP said LongPlay, the long mode, compression rate, there will be some reduction in sound quality. Between different products must have some differences, so you had better buy digital voice recorder recorded a live sound, and then carefully listen to the sound quality if the noise. Gotta say imported brands such as SONY, SANYO, domestic patriot, Heng Site, the Beijing's quality would be better. Sound file storage mode The length of recording time and voice recorder stores audio files supported by the relevant specifications, the current common are LP (long time recording), SP (standard recording), HQ (high quality recording) three basic models. In addition to these three models, there is a SHQ (super high-fidelity sound recording) mode, but this model has very little digital voice recorder. The standard recording time is the recording pen in the SP mode recording time to the maximum memory support. LP (LongPlay) that for a long time recording, compression rate, sound quality by sacrificing some circumstances extend down the length of recording, and generally extend the length of time the recording about 80%. That is to reduce the cost of audio quality, so there will be some reduction in sound quality. SP (Standard play) the standard recording time, this approach is not high compression rate, better sound quality, recording time is moderate. HQ (High quilty) high quality recording. This recording method is very low compression rate, sound quality is very good, but the capacity is relatively large, generally used for high demand situations, such as an important speech for the type of records archived Storage Random or built-in memory, digital voice recorder is an analog recording, with built-in flash memory to store audio information. Flash memory is characterized by power, save in the above information is not lost, in theory, can withstand repeated millions of times on the rewritable (ordinary users who can not go to a few too), so repeated use of the cost is zero. Flash memory digital voice recorder can be said to be the most expensive components, of course, greater capacity, the price is more expensive, but the longer recording time. From the current situation, the built-in 512M flash memory can store about 136 hours recording information, the built-in 1GB flash memory can store about 272 hours recording information. Now in addition to built-in memory products, some digital voice recorder will provide an external memory card such as CF, SM, etc.; disadvantage is that once this external card quality is not good, or bad finger a long time, prone to data errors; but also facilitate the exchange and sharing audio content and data transfer, can also use the card reader to record data quickly into the computer. Digital voice recorder has been able to do light and small, but also because it uses flash memory as a random memory. In the digital voice recorder just born, flash memory is also a relatively rare stuff, prices are also expensive. Today, Flash has been widely, a large number of applications, all of its familiarity has been greatly improved, prices dropped dramatically than ever before. Therefore, the price of digital recording pen down a lot.
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