Voice Recognition Sensor — Offline Language Learning — Gravity

IntroductionWhat is voice recog­ni­tion?Voice recog­ni­tion is a com­put­er tech­nol­o­gy that rec­og­nizes and con­verts speech sig­nals into editable text or oper­a­tional com­mands through analy­sis. It allows peo­ple to inter­act with com­put­ers by speak­ing with­out using a mouse, key­board, or oth­er input devices. Voice recog­ni­tion tech­nol­o­gy has been wide­ly used in appli­ca­tions such as voice assis­tants, smart homes, voice search, and voice recog­ni­tion note­books.DescriptionWhat is Grav­i­ty: offline lan­guage learn­ing voice recog­ni­tion sen­sor?Grav­i­ty: offline speech recog­ni­tion sen­sor is built around an offline voice recog­ni­tion chip, which can be direct­ly used with­out an inter­net con­nec­tion. It comes with 121 built-in fixed com­mand words and sup­ports the addi­tion of 17 cus­tom com­mand words. Mean­while, this voice recog­ni­tion mod­ule com­pat­i­bil­i­ty with mul­ti­ple com­mon con­trollers enables it to pro­vide a flex­i­ble solu­tion for mak­ers and elec­tron­ics enthu­si­asts in terms of voice inter­ac­tion. It can be applied to any appli­ca­tion that requires voice con­trol or inter­ac­tion, such as var­i­ous smart home appli­ances, toys, light­ing fix­tures, and robot­ics projects, among oth­ers.Self-Learn­ing Func­tionThe voice recog­ni­tion mod­ule is equipped with a self-learn­ing func­tion and sup­ports the addi­tion of 17 cus­tom com­mand words. Any sound could be trained as a com­mand, such as whistling, snap­ping, or even cat meows, which brings great flex­i­bil­i­ty to inter­ac­tive audio projects.For instance auto­mat­ic pet feed­er. When a cat emits a meow, the offline voice recog­ni­tion mod­ule can rec­og­nize the meow and trig­ger the feed­er to auto­mat­i­cal­ly pro­vide food for the cat. This inno­v­a­tive design ensures that the own­er can prompt­ly meet the cat’s dietary needs. More­over, the prod­uct is equipped with excel­lent noise resis­tance and long-dis­tance recog­ni­tion capa­bil­i­ties, allow­ing for pre­cise iden­ti­fi­ca­tion of the cat’s meows even in noisy envi­ron­ments.User-Friend­lyThe offline speech recog­ni­tion sen­sor boasts a user-friend­ly design. It comes with 121 built-in fixed com­mand words, elim­i­nat­ing the need for users to record their own voic­es.For instance, in an intel­li­gent win­dow sys­tem, when it starts to rain or thun­der, there’s no need for man­u­al win­dow oper­a­tion. The offline voice recog­ni­tion mod­ule can rec­og­nize the pre-set com­mand word “close the win­dow,” trig­ger­ing the auto­mat­ic clos­ing of the win­dow to cope with sud­den weath­er changes.121 built-in fixed command words:High Com­pat­i­bil­i­tyThe mod­ule boasts high com­pat­i­bil­i­ty, sup­port­ing both I2C and UART com­mu­ni­ca­tion meth­ods, while also being com­pat­i­ble with var­i­ous 3.3V or 5V con­trollers, such as micro:bit, Arduino (Arduino UNO, Arduino Leonar­do, Arduino MEGA), Rasp­ber­ry Pi, Fire­Bee­tle ESP32 series, and more. This pro­vides a flex­i­ble solu­tion for build­ing smart home sys­tems, robot­ics projects, and more. The pros and cons of offline and online voice recog­ni­tion:FeaturesSelf-learn­ing func­tion: Con­trol the mod­ule to learn com­mand words by the voice, and any audio can be trained as a com­mandSup­port I2C and UART, with a Grav­i­ty inter­faceCom­pat­i­ble with 3.3V/5VBuilt-in with 121 com­mon­ly-used fixed com­mand wordsThe mod­ule has a built-in speak­er and an inter­face for an exter­nal speak­er, which can pro­vide real-time voice feed­back on recog­ni­tion resultsEquipped with pow­er indi­ca­tor (red) and recog­ni­tion sta­tus indi­ca­tor (blue)Dual micro­phones pro­vide bet­ter noise resis­tance and longer recog­ni­tion dis­tanceCom­pat­i­ble with Arduino con­trollers: Arduino UNO, Arduino Leonar­do, Arduino MEGA, Fire­Bee­tle series con­trollers, Rasp­ber­ry Pi, ESP32ApplicationsVoice recog­ni­tion inter­ac­tionVoice-con­trolled ter­mi­nalCom­pe­ti­tion and project devel­op­mentSpecificationsOper­at­ing Volt­age: 3.3 — 5VMax­i­mum Oper­at­ing Cur­rent: ≤370 mA (5V)Com­mu­ni­ca­tion: I2C/UARTI2C Address: 0x64Fixed Com­mand: 121Fixed Wake-up Com­mand: 1Cus­tom Com­mand: 17Learn­ing Acti­va­tion Com­mand: 1Onboard Micro­phone Sen­si­tiv­i­ty: ‑28dbMod­ule Size: 49×32 mm/1.93×1.26”Oper­at­ing Tem­per­a­ture: 0–70℃Package ListGrav­i­ty: Voice Recog­ni­tion Mod­ule — I2C & UART x1Grav­i­ty-4P I2C/UART Sen­sor Con­nec­tor x1ResourcesProd­uct wiki