diff --git a/Cargo.lock b/Cargo.lock
index 2c6434f..7fa03f0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -217,6 +217,7 @@ dependencies = [
  "libm",
  "miniconf",
  "ndarray",
+ "num",
  "rand",
  "serde",
 ]
@@ -457,6 +458,19 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2178127478ae4ee9be7180bc9c3bffb6354dd7238400db567102f98c413a9f35"
 
+[[package]]
+name = "num"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b7a8e9be5e039e2ff869df49155f1c06bd01ade2117ec783e56ab0932b67a8f"
+dependencies = [
+ "num-complex",
+ "num-integer",
+ "num-iter",
+ "num-rational",
+ "num-traits",
+]
+
 [[package]]
 name = "num-complex"
 version = "0.3.1"
@@ -476,6 +490,28 @@ dependencies = [
  "num-traits",
 ]
 
+[[package]]
+name = "num-iter"
+version = "0.1.42"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b2021c8337a54d21aca0d59a92577a029af9431cb59b909b03252b9c164fad59"
+dependencies = [
+ "autocfg",
+ "num-integer",
+ "num-traits",
+]
+
+[[package]]
+name = "num-rational"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "12ac428b1cb17fce6f731001d307d351ec70a6d202fc2e60f7d4c5e42d8f4f07"
+dependencies = [
+ "autocfg",
+ "num-integer",
+ "num-traits",
+]
+
 [[package]]
 name = "num-traits"
 version = "0.2.14"
diff --git a/dsp/Cargo.toml b/dsp/Cargo.toml
index 1fefdd7..4c675ff 100644
--- a/dsp/Cargo.toml
+++ b/dsp/Cargo.toml
@@ -8,6 +8,7 @@ edition = "2018"
 libm = "0.2.1"
 serde = { version = "1.0", features = ["derive"], default-features = false }
 generic-array = "0.14"
+num = { version = "0.3.1", default-features = false }
 miniconf = "0.1"
 
 [dev-dependencies]