Technology changes life, intelligence optimizes life! Intelligent technology is inseparable from speech recognition. Some people may ask: why is the speech recognition chip I tested in other people's house completely different from your speech recognition chip? So bad?!

What Xiaobian wants to say is: because you test online speech recognition in other homes, while ours is offline speech recognition.

Offline speech recognition and online speech recognition have tea cups. Where are they? Listen to Xiaobian and speak slowly.

★ offline speech recognition: fixed entries, no need to connect to the network, but the recognition rate is slightly low

★ online speech recognition: the entry is not fixed and needs to be connected to the network. The recognition rate is high, but the effect will be affected by the network and the price is relatively high

What is the difference between offline speech recognition and online speech recognition? What are the differences?

Advantages and disadvantages of offline speech recognition and online speech recognition:

Off line speech recognition

Advantages:

1. Fast response speed (below 0.2S), can quickly respond to the corresponding command word instructions;

2. No network or app is required;

3. If the speech recognition function fails, it will not affect the use of other functions of the product;

4. Users don't have to worry that other conversation content will be recorded and uploaded to the cloud;

5. The module is small in size and convenient for engineers to draw.

inferiority:

1. Command words are fixed, and the number and length of entries will be limited;

2. The development cycle of the project is longer than that of the online scheme. After all, the mass-produced offline voice products need to be re recorded and trained on the server.

Online speech recognition

Advantages:

1. Consumers are easy to use and do not limit command words;

2. The development of manufacturers is convenient, and there are many options for market solutions. Bat giants play cloud.

inferiority:

1. Networking is required to connect to the cloud; 2. Slow response speed; 3. High cost.

What is the difference between offline speech recognition and online speech recognition?

① An important factor in speech recognition is the speech database, which is used as the data for comparison in the recognition process

The online voice database is in the cloud, and the data stored is very huge; The offline speech database is local, and the space is limited, so the difference between the compared data samples is relatively large. Assuming that the input speech "turns on the light", the recognition process will compare the speech with the sound samples in the speech database. The more data samples in the speech database, the higher the possibility of successful matching, so the higher the recognition success rate

② The operation speed of on-line recognition is very fast. Compared with off-line speech recognition, it is similar to the operation speed of CPU and chip, and the level difference is relatively large

So our outgoing access is better offline than online?! Do the values of offline speech recognition exist? If you think so, I can only say that you still don't understand this article; Each technology has its value, but different technologies are applicable to different fields. The effect of off-line recognition is relatively worse than that of on-line recognition, but it is better than that in the environment requiring distance and relatively quiet, and the recognition rate can reach more than 90%; In terms of price, offline speech recognition can meet many occasions, and the price is cheaper than online. Although in terms of application, online recognition has higher relativity than offline, it mainly depends on the market positioning and selection of users' R & D products.