听音练习 · 帮助与支持
「听音练习」是为乐器学习者设计的听音训练 App：听一个音，用你的乐器把它奏出来；再配合音程与和弦听辨，练出「听到就能奏出」的耳朵。
常见问题
演奏了但 App 没有反应？
- 确认已允许麦克风权限：iOS「设置 → 隐私与安全性 → 麦克风」中打开「听音练习」。
- 尽量在安静的环境练习，手机放在离乐器一两米以内。
- 每个音吹（拉、弹）稳一点、长一点，App 需要一小段稳定的声音才能判定。
- 在单音听辨设置里选对你的乐器，题目会限制在乐器能奏出的音域内。
音名对了却判错？
判定精确到八度：要奏出和听到的音同一个八度的音。每题开始前播放的是调的主音，可以作为判断高低的参照。
换了手机，购买的高级版怎么恢复？
用同一个 Apple ID 登录，打开 App 的「设置 → 高级版 → 恢复购买」即可。
练习记录会丢吗？
登录 iCloud 后，练习记录、统计和错题本会自动同步到你的 iCloud，换设备后会自动恢复。可以在 App 的「设置 → iCloud」查看同步状态。
联系我们
遇到问题或有建议，欢迎发邮件：eartraining.app@outlook.com。请附上你的设备型号和 iOS 版本，方便排查。
Play by Ear · Support
Play by Ear is an ear-training app for musicians: hear a note and play it back on your instrument, then build your ear further with interval and chord training.
FAQ
I'm playing but the app doesn't respond
- Make sure microphone access is on: iOS Settings → Privacy & Security → Microphone → Play by Ear.
- Practice somewhere quiet, with the phone within a meter or two of your instrument.
- Play each note clearly and hold it a little — the app needs a short stable sound to judge it.
- Choose your instrument in the Single Note settings so questions stay within its range.
The note name is right but it's marked wrong
Answers must match the octave as well: play the note in the same octave you heard. Each question starts with the key's tonic, which you can use as a reference.
How do I restore Pro on a new device?
Sign in with the same Apple Account and tap Settings → Pro → Restore Purchases in the app.
Will I lose my practice history?
When you're signed in to iCloud, your history, statistics and missed notes sync automatically and come back on a new device. You can check the sync status under Settings → iCloud in the app.
Contact
Questions or suggestions? Email eartraining.app@outlook.com and include your device model and iOS version.