Best speakers test sound video (10 -20000 Hz) - 15 minutes of linear amplitude, full range, bass, medium and treble - video spectrum and high quality audio

Dolby TrueHD 7.1 Surround Sound Test Full HD

Various Artists - Reflexology Masaj Müzikleri 1 Saat Kesintisiz - Reflexology Massage Music 1 Hour

Digital 3D 7.1 Surround Sound Test (Full HD)

THX Test 7.1 True HD

Speakers test sound (15-20000 Hz) - 60 minutes (one hour) linear amplitude, full range, bass, medium and treble - video spectrum and high quality audio

Best Surround Sound System In 2023 | Top 5 Home Theater Sound Speaker Systems Review

Good Sound for £/$35

Various Artists - Yağmur Sesi 1 Saat - Rain Sound 1 Hour

30 minutes reverse countdown timer - 4K video

30 minutes of annoying baby cry sound

Bonnet hair dryer sleep sounds

Fan heater - sleep sound effect

Brownian noise for sleep, relaxation, meditation, studying, stress relief, focus, sound therapy - 60 minutes (one hour)

19Hz Infraschall - die Angstfrequenz - verursacht Unbehagen, Schwindel, verschwommenes Sehen (durch Vibration der Augäpfel), Hyperventilation und Angst, was möglicherweise zu Panikattacken führt - 60 Minuten (eine Stunde)

Son d'aspirateur, bébé, bruit blanc naturel, nourrisson, nouveau-né, sommeil, relaxation, apaisement, colique, astuce de sommeil, recharge - 60 minutes (une heure) de haute qualité sonore

Rosa Rauschen und Ton zur Beruhigung, konzentriert, konzentrieren, schlafen, entfernen Umgebungsgeräusche, Kind schlafen, neugeboren, Säugling, Koliken, Arbeitszimmer, Hausaufgaben - 1 Stunde

Asthma Frequenz Heilung - überwindet Asthma natürlich mit diesem Klang und Geräusch - 1 Stunde

Awareness brain waves ranges from 14-40 hz (60 minutes - one hour)

Odaklanma, konsantrasyon artışı, ev ödevleriniz ve okulunuz için zihninizi, sesinizi ve arka plan sesinizi sakinleştirin - bir saat

고품질 지진 소리와 소음 1 시간

Child playground ambient sound - 60 minutes (one hour) of high quality sound

Şelale sesinin rahatlatıcı sesi - bir saat yüksek ses kalitesi

우주는 72, 144, 432와 같은 고조파 시리즈를 기반으로합니다 - 1 시간

인식 뇌파는 14-40 Hz에서 범위 (1 시간)

1 시간 역 카운트 다운 타이머