If you want to buy a voice recorder for listening to lectures, I hope you can record it clearly, so

If the conditions are too noisy, professional noise reduction chips and noise reduction technology will reduce the noise to a certain extent.

The best recording format is PCM linear lossless recording, such as recording**, etc.

There are three brands of better voice recorders: Sony, Sanyo, and Olympus. There is a big gap between other brands and others.

Sony's advantage is that it is an old electronics manufacturer, the quality and effect are okay, it is relatively mediocre (except for the professional-grade D50), and the cost performance is not high.

Sanyo and Olympus are both long-established recording manufacturers with outstanding innovative technology.

Sanyo's advantage is cost-effective, excellent chips and advanced technology are enough to eliminate any opponent, and the quality effect is super-first-class, I recommend it.

The advantage of Olympus is that the noise reduction technology of the mobile phone is introduced into the voice recorder, and the noise reduction is excellent, but the recording distance is lower than that of Sony, and the cost performance is okay, which is slightly higher than Sony.

Sony D50 - entry-level professional recording equipment, around 3000.

Olympus DS55 or DS65 – Professional portable recording equipment, DS55 approx. 1350, DS65 approx. 1700.

Sanyo PS501 - long-term stability ranks first in Japan's sales and attention, the effect is self-evident, about 950 (Japanese licensed).

Hope it helps.

There are some ways to improve the efficiency of learning and working with a voice recorder:

2.Note-taking aid: When listening to lectures or studying, you can use a voice recorder and a notebook to record at the same time.

The right recorder can be used to record important explanations or discussions, and the notebook can be used to write down key points and your own understanding. This reduces omissions and forgetting, and deepens understanding of the content.

3.Self-training and speaking practice: You can use a voice recorder for self-training and speaking practice. You can record your own speech, speaking practice, or reading aloud, and then listen to your own expression over and over again, identify deficiencies, and improve them.

4.Take notes to review: When studying, in addition to taking good notes, you can also use a voice recorder to record the whole learning process. When revising, you can play back the recording and listen to the teacher's explanation and your own thinking process again, which will help you review and consolidate your knowledge.

5.Learn language and listening: You can use a voice recorder to practice listening to the language. You can record some listening materials, such as news, stories, lectures, etc., and then listen to them repeatedly and dictate and understand.

6.Mind Recording and Inspiration Capture: When creating, thinking, or solving problems, you can use a voice recorder to record your thought flow and inspiration, so that you can better save and organize your ideas.

In general, the use of voice recorders can help us better record and review important content in the process of learning and work, improve efficiency and consolidate knowledge. However, when using voice recorders, you should also pay attention to protecting personal privacy and copyright, and comply with relevant laws and regulations.

Then recommend the professional digital voice recorder of the well-known domestic brand: Xinke brand, if you like lithium battery, then use Xinke V18, from function to performance are very good, the functions are as follows: 1, the battery has a long battery life of 70 hours of continuous recording, exceeding the industry 10 times 2, IML + die-casting top process manufacturing 3, true OLED display 4, FM campus broadcast 5, one-key recording 6, support ** recording 7, Chinese display 8, built-in lithium battery.

Xinke also has a V20 with dry battery, which can reach a distance of 25 meters for recording, with noise reduction function, stereo recording, and combination lock. Very powerful and cost-effective.

If you record a lecture in English, the domestic one can also deal with it, but the scene restoration is weak, and the gap between the sense of hierarchy and Nissan is large.

Look at what you need to do and decide what kind of purchase. The domestic voice recorders are uneven, Nissan's Sony, Sanyo, and Olympus are of the same grade, and the effect is almost the same. Sanyo and Olympus have innovative technology and spirit, and Sony is the absolute leader in the electronics industry.

Recent cost-effective mid-range voice recorder:

Sanyo S280, Dangdang.com**The lowest is 899, and there is free shipping for licensed goods.

Olympus WS-321M, **brand new box, store warranty for one year, minimum 580 yuan free shipping.

Sony UX71, licensed, less than 1000 yuan.

You can check it online.

1) I just bought a set recently: I bought a Lenovo B520 (280 yuan to hand including shipping), and a stereo microphone with Audio-Technica (78 yuan including shipping)! 2) The domestic buttons are not very flexible, if you want to record with good sound quality, you have to tune to the highest quality recording mode, generally 1GB can record for 17 hours, *** format, sampling rate 128kbps!

A lot of voice recorders can reach this length of time and sample rate! However, their original built-in or external microphones have two major drawbacks: one is that the noise is high, the current is loud, and the other is not flexible enough!

So I have an original microphone of Audio-Technica, and of course you can also buy a Sanyo HM-200 (130 pieces each)! Audio-Technica AT9830 This stock microphone I think is very cost-effective, with very low recording noise and high flexibility! 3) Recording handwriting Zen recommends that you save a little and spend more than 100 yuan to buy one that can support external microphones!

As long as it supports 128kbps sample rate, you're good to go! In addition, it is better to use dry batteries, because lithium.

The battery pool is easy to break, and it will be completely scrapped after a long time when the battery is aged! Isn't it wasted? 4*) I bought this set of things,I feel the effect is good,In addition to Lenovo's screen too old cold light looks uncomfortable,With the Japanese Audio-Technica's microphone, the recording is super clear,And with the original microphone it's terrible!

I mainly suggest you: the voice recorder can be bought a poor one, but it must be equipped with a split "golden ear", and the effect will be hidden in the dust!

And you can save money!

1) I just bought a set recently: I bought Lenovo B520 (280 yuan to the rolling bucket with freight), and with a stereo microphone with an iron triangle (78 yuan including freight).

2) The domestic button preparation is not very sensitive, if you want to record with good sound quality, you have to tune to the highest quality recording mode, generally 1GB can record for 17 hours, *** format, sampling rate 128kbps. A lot of voice recorders can reach this length of time and sample rate! However, there are two major drawbacks to the built-in or external microphones they come with

One is that the noise is loud, the current is loud, and the second is that the sensitivity is not enough!

So I have an original microphone of Audio-Technica, and of course you can also buy a Sanyo HM-200 (130 pieces each)! Audio-Technica AT9830 This stock microphone I think is very cost-effective, the recording noise is very low, and the sensitivity is high!

3) The voice recorder suggests that you save a little and spend more than 100 yuan to buy one that can support external microphones. As long as it supports 128kbps sample rate, you're good to go! In addition, it is best to use dry batteries, because lithium batteries are easy to break, and if they are used for a short time, the battery will be completely scrapped after a long time!

Isn't it wasted?

4*) I bought this set of things, I feel that the effect is good, except that the screen of Lenovo is too small, and the old cold light looks uncomfortable, and the recording is super clear after the microphone of the Japanese Audio-Technica, and it sucks with the original microphone!

I mainly suggest you: the voice recorder can be bought with a poor one, but if you have to match it with another "golden ear", the effect will be ox X!

And you can save money!