Does anyone know the code for the symbol less than or greater than \lessgtr in latex

Question

Need to know the code for symbol less than or greater than in this format:

Note: detexify and the comprehensive book of symbols were with no help.

Also this one is depreciated:

\lessgrt\limits_{noise}^{speech}

Answer 1

Like this?

\documentclass{article}

\usepackage{amssymb}

\begin{document}

\[
y_k \mathop{\lessgtr}_{noise}^{speech} \eta
\]

\end{document}