You’ll flood the Blynk server if you try to send more than 10 data points per second, and the waveform you’re looking for requires more data points than this.
Blynk doesn’t support the type of sample rate you’re looking for - it’s an IoT product designed for recording data that changes much more slowly. It doesn’t matter how many different ways you ask the question, the infrastructure doesn’t support the sample rate you’re looking for.
Pete.