Whistle Training ne fonctionne plus

Once your dog has mastered it, assign a whistle pattern that will represent the command. Play the pattern, e. g. 2 short taps, say sit and reward your dog for performing.  Dog whistle is a great tool to train dogs at a distance when instead of shouting the command out loud, you play a whistle pattern.  In the beginning, always combine whistle pattern with the verbal cue.  After a few days of doing 20 repetitions/ day, play the pattern and once your dog sits down, reward with a jackpot!  Do the same with different commands, e. g. down/ come just choose a different sound pattern. Note it down. Warning.  Use dog whistle only sparingly, tap only in conjunction with a reward.  You have to teach your dog what the whistle sound means.  First, you can use a whistle to mark the behaviour, as “good job”.  Tap the whistle, give a treat, tap the whistle give a treat, etc.  Second, with the help of Dogo - dog training app, teach your dog some obedience commands, e. g. sit or lay down.  Dogs typically can detect sounds between 67-45,000 Hz, while humans can detect sounds between 64-23,000 Hz.  This way your dog will start making a positive association with it.  Wait until your pup is asleep, then test each tone.  You have to find out a frequency that your dog reacts to.  The right one will wake him right up. Training.  What frequency should I use?