In today's hand with a smart phone, vibrato is the way today, not to mention recording audio, recording video anytime, anywhere, sharing video is an extremely simple and convenient thing. So does this era still need voice recorders, which seem to be "antique" electronic products? There are a thousand Hamlets in the eyes of a thousand people, and the author believes that the main thing is to look at the habits of the individual and the occasion of use.
For example, the demand for recording functions is only occasional, and the recording occasion does not need to avoid anything, then, a smart phone is enough; If you often use the recording function for work, study and other reasons, or if it involves some "magical encounters" and needs hidden recordings to protect your interests, then you definitely need a voice recorder that is confusing enough, such as the Newman digital voice recorder of this issue of hard-core demolition.
dismantle
Newman's voice recorder, with its own ballpoint pen function, can write normally, so even on some special occasions, it is confusing enough. Unscrew the pen holder and there is something else inside. The first paragraph is a real ballpoint pen, nothing to say, while the next paragraph is the real implementation of the recording function circuit part, the specific disassembly situation is shown in the following figure.
I have to say that the dismantling process is quite troublesome, but the internal hardware solution is quite concise. And in the rough disassembly process, the only power switch on the PCB board was also ripped off, and throughout the entire circuit board, there were basically not many components.
The main chip is Juli's audio master control chip ATJ2127, which is a highly integrated multimedia single-chip processor, the previous MP3, MP4, etc. are used in this master control, high integration, low power consumption, simplified peripheral circuits, the price can also be, so in some audio players, video players and derivative Bluetooth intelligent application products can be used.
Voice recorder to collect sound microphone is the traditional electret condenser microphone, the actual recording effect is not ideal, the ambient noise is very large, far less than the current smart phone noise reduction silicon microphone combination, compared to the silicon microphone the only advantage can be said to be cheap, and the disadvantages are more, such as large size, can not SMT, sensitivity instability and so on.
The power supply is a JHCY rechargeable lithium battery, without capacity marking; The power switch circuit part has an A1LA MOS tube control.
The back of the PCB board circuit is pasted with a Flash chip for recording sound storage, model MT29F64G08CBAAA, Micron's 8GB Flash, once many U disks have used this storage, now the capacity is too small, basically will not be used, only exists in some entry-level electronic products.
So taken together, the entire Newman Voice Recorder's hardware solution: a microphone as a sound acquisition, a torch audio master chip as processing, Micron Flash for storage, and a rechargeable lithium battery as a power supply. The main component BOMs involved are as follows:
| Manufacturers | Model | illustrate |
| Torch | ATJ2127 | Audio master chip |
| Micron | MT29F64G08CBAAA | FLASH |
| JHCY | Unknown | Rechargeable lithium battery |
| Unknown | Silk screen printing A1LA | MOS tube |
brief summary
Through disassembly, it is not difficult to find that the hardware circuit of Newman's voice recorder is indeed simple, relying on some local domestic chip manufacturers can be fully competent, no wonder as long as it is a smart phone, it is basically possible to achieve the function of recording at present. Through market sales data, it can also be found that with the popularity of smart phones, the market share of traditional voice recorders is declining year by year, and it may only be in some occasions (such as the need for a long enough end, strong enough concealment, or the need for functional expansion in some areas). Like some high-end voice recorders, in addition to their own high-quality recordings, they also provide additional value-added services, such as voice conversion, converting the sound you record into text, and even some voice recorders also have screens and cameras, which can take real-time pictures and text transcriptions or translations. In short, in addition to recording, more value-added service functions are growing barbarically, which may be another way out for voice recorders. So dear little friend, what is your point of view? Welcome to leave a message to discuss.